| 1. |
- Ridderstolpe, Lisa, et al.
(författare)
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Superficial and deep sternal wound complications : Incidence, risk factors and mortality
- 2001
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Ingår i: European Journal of Cardio-Thoracic Surgery. - : Oxford Academic. - 1010-7940 .- 1873-734X. ; 20:6, s. 1168-1175
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: Sternal wound complications often have a late onset and are detected after patients are discharged from the hospital. In an effort to catch all sternal wound complications, different postdischarge surveillance methods have to be used. Together with this long-term follow-up an analysis of risk factors may help to identify patients at risk and can lead to more effective preventive and control measures.Methods: This retrospective study of 3008 adult patients who underwent consecutive cardiac surgery from January 1996 through September 1999 at Link÷ping University Hospital, Sweden, evaluated 42 potential risk factors by univariate analysis followed by backward stepwise multivariate logistic regression analysis.Results: Two-thirds of the 291 (9.7%) sternal wound complications that occurred were identified after discharge. Of the 291 patients, 47 (1.6%) had deep sternal infections, 50 (1.7%) had postoperative mediastinitis, and 194 (6.4%) had superficial sternal wound complications. Twenty-three variables were selected by univariate analysis (P<0.15) and included in a multivariate analysis where eight variables emerged as significant (P<0.05). Preoperative risk factors for deep sternal infections/mediastinitis were obesity, insulin-dependent diabetes, smoking, peripheral vascular disease, and high New York Heart Association score. An intraoperative risk factor was bilateral use of internal mammary arteries, and a postoperative risk factor was prolonged ventilator support. Risk factors for superficial sternal wound complications were obesity, and an age of
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| 2. |
- Ridderstolpe, Lisa, et al.
(författare)
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Canonical correlation analysis of risk factors and clinical outcomes in cardiac surgery
- 2005
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Ingår i: Journal of medical systems. - : Springer. - 0148-5598 .- 1573-689X. ; 29:4, s. 357-377
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Tidskriftsartikel (refereegranskat)abstract
- Assessment of the association between risk factors and outcomes in cardiac surgery is a complex problem. The aim of this study was to explore the relationship between possible risk factors and several clinical outcomes in cardiac surgery by using canonical correlation analysis (CCA). This retrospective study of 2605 consecutive adult patients who underwent cardiac surgery, evaluated 74 potential risk factors and up to 12 outcomes by canonical correlation analysis. For three serious outcomes, sternal wound complications/mediastinitis, cerebral complications, and perioperative myocardial infarctions, CCA was preceded by univariate analyses and backward stepwise multivariate logistic regression analyses. The CCA suggests that the major risk factors for complications in these models are intraoperative and postoperative risk factors. The power of risk prediction models developed with multivariate regression analysis can be enhanced by application of canonical correlation analysis, thereby offering new ways of analyzing and interpreting sets of potential risk factors in relation to sets of clinical outcomes.
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| 3. |
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| 4. |
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| 5. |
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| 6. |
- Petersson, Håkan, 1972-, et al.
(författare)
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A variance-based measure of inter-rater agreement in medical databases
- 2002
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Ingår i: Journal of Biomedical Informatics. - 1532-0464 .- 1532-0480. ; 35:5-6, s. 331-342
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Tidskriftsartikel (refereegranskat)abstract
- The increasing use of encoded medical data requires flexible tools for data quality assessment. Existing methods are not always adequate, and this paper proposes a new metric for inter-rater agreement of aggregated diagnostic data. The metric, which is applicable in prospective as well as retrospective coding studies, quantifies the variability in the coding scheme, and the variation can be differentiated in categories and in coders. Five alternative definitions were compared in a set of simulated coding situations and in the context of mortality statistics. Two of them were more effective, and the choice between them must be made according to the situation. The metric is more powerful for larger numbers of coded cases, and Type I errors are frequent when coding situations include different numbers of cases. We also show that it is difficult to interpret the meaning of variation when the structures of the compared coding schemes differ.
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| 7. |
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| 8. |
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| 9. |
- Razavi, Amir Reza, 1973-, et al.
(författare)
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An approach for generating fuzzy rules from decision trees
- 2006
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Ingår i: Ubiquity. - : IOS Press. - 9781586036478 ; , s. 581-586
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Konferensbidrag (refereegranskat)abstract
- Identifying high-risk breast cancer patients is vital both for clinicians and for patients. Some variables for identifying these patients such as tumor size are good candidates for fuzzification. In this study, Decision Tree Induction (DTI) has been applied to 3949 female breast cancer patients and crisp If-Then rules has been acquired from the resulting tree. After assigning membership functions for each variable in the crisp rules, they were converted into fuzzy rules and a mathematical model was constructed. One hundred randomly selected cases were examined by this model and compared with crisp rules predictions. The outcomes were examined by the area under the ROC curve (AUC). No significant difference was noticed between these two approaches for prediction of recurrence of breast cancer. By soft discretization of variables according to resulting rules from DTI, a predictive model, which is both more robust to noise and more comprehensible for clinicians, can be built.
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| 10. |
- Razavi, Amir Reza, 1973-, et al.
(författare)
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Canonical correlation analysis for data reduction in data mining applied to predictive models for breast cancer recurrence
- 2005
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Ingår i: The XIXth International Congress of the European Federation for Medical Informatics,2005. - Amsterdam : IOSPress. ; , s. 175-180
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Konferensbidrag (refereegranskat)abstract
- Data mining methods can be used for extracting specific medical knowledge such as important predictors for recurrence of breast cancer in pertinent data material. However, when there is a huge quantity of variables in the data material it is first necessary to identify and select important variables. In this study we present a preprocessing method for selecting important variables in a dataset prior to building a predictive model. In the dataset, data from 5787 female patients were, analysed. To cover more predictors and obtain a better assessment of the outcomes, data were retrieved from three different registers: the regional breast cancer, tumour markers, and cause of death registers. After retrieving information about selected predictors and outcomes from the different registers, the raw data were cleaned by running different logical rules. Thereafter, domain experts selected predictors assumed to be important regarding recurrence of breast cancer. After that, Canonical Correlation Analysis (CCA) was applied as a dimension reduction technique to preserve the character of the original data. Artificial Neural Network (ANN) was applied to the resulting dataset for two different analyses with the same settings. Performance of the predictive models was confirmed by ten-fold cross validation. The results showed an increase in the accuracy of the prediction and reduction of the mean absolute error.
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| 11. |
- Razavi, Amir Reza, 1973-, et al.
(författare)
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Data Mining Approach to Analyze Non-compliance with a Guideline for the Treatment of Breast Cancer
- 2007
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Ingår i: MEDINFO 2007: PROCEEDINGS OF THE 12TH WORLD CONGRESS ON HEALTH (MEDICAL) INFORMATICS, PTS 1 AND 2. - : IOS Press. - 9781586037741 ; , s. 591-595
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Konferensbidrag (refereegranskat)abstract
- Postmastectomy radiotherapy (PAMT) is prescribed in order to reduce the local recurrence of breast cancer and improve overall survival. A guideline supports the trade-off between benefits and adverse effects of PMRT However, this guideline is not always followed in practice. This study tries to find a method for revealing patterns of noncompliance between the actual treatment and the PMRT guideline.Data from breast cancer patients admitted to Linkoping University Hospital between 1990 and 2000 were analyzed in this study. Cases that were not treated in accordance with the guideline were selected and analyzed by decision tree induction (DTI). Thereafter, four resulting rules, as representations for groups of patients, were compared to the guideline.Finding patterns of non-compliance with guidelines by means of rules can be an appropriate alternative to manual methods, i.e. a case-by-case comparison when studying very large datasets. The resulting rules can be used in a knowledge base of a guideline-based decision support system to alert when inconsistencies with the guidelines may appear.
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| 12. |
- Ridderstolpe, Lisa, et al.
(författare)
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Clinical process analysis and activity-based costing at a heart center
- 2002
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Ingår i: Journal of medical systems. - : Springer. - 0148-5598 .- 1573-689X. ; 26, s. 309-322
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Tidskriftsartikel (refereegranskat)abstract
- Cost studies, productivity, efficiency, and quality of care measures, the links between resources and patient outcomes, are fundamental issues for hospital management today. This paper describes the implementation of a model for process analysis and activity-based costing (ABC)/management at a Heart Center in Sweden as a tool for administrative cost information, strategic decision-making, quality improvement, and cost reduction. A commercial software package (QPR®) containing two interrelated parts, “ProcessGuide and CostControl,” was used. All processes at the Heart Center were mapped and graphically outlined. Processes and activities such as health care procedures, research, and education were identified together with their causal relationship to costs and products/services. The construction of the ABC model in CostControl was time-consuming. However, after the ABC/management system was created, it opened the way for new possibilities including process and activity analysis, simulation, and price calculations. Cost analysis showed large variations in the cost obtained for individual patients undergoing coronary artery bypass grafting (CABG) surgery. We conclude that a process-based costing system is applicable and has the potential to be useful in hospital management.
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| 13. |
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| 14. |
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| 15. |
- Wigertz, Ove, 1934-, et al.
(författare)
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Teaching medical informatics to medical students
- 1990
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Ingår i: Int Conference on Medical Informatics and Medical Education IMIA,1990. - : Elsevier Science Publ. ; , s. 41-
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Konferensbidrag (refereegranskat)
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| 16. |
- Wigertz, Ove, 1934-, et al.
(författare)
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Teaching medical informatics to medical students
- 1991
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Ingår i: IMIA Int Conference on Medical Informatics and Medical Education,1990. - Amsterdam : Elsevier Science Publishers. ; , s. 41-
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Konferensbidrag (refereegranskat)
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| 17. |
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| 18. |
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| 19. |
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| 20. |
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| 21. |
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| 22. |
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| 23. |
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| 24. |
- Carlsson, Mats, 1965-, et al.
(författare)
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Classification of procedures in the domain of thoracic surgery : a study of relibility in coding
- 2001
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Ingår i: Journal of medical systems. - 0148-5598 .- 1573-689X. ; 25:1, s. 47-61
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Tidskriftsartikel (refereegranskat)abstract
- This paper relates a study of reliability of coding of surgical procedures in the domain of thoracic surgery. The reliability measured is inter-coder variability in form of agreement. Four classifications were used by four physicians on 100 patient cases. The classifications, having differing granularity and structure, were analyzed using a statistical method (kappa). These results are discussed and related to the differences between the classifications. One of the topics for discussion is how the granularity affects the degree of agreement, coupled to the usefulness of the classification. Also the concept of using formal methods for representing classifications is discussed, how this will affect how classifications are designed and used.
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| 25. |
- Carlsson, Mats, 1965-, et al.
(författare)
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Design and application of a terminology management system
- 1998
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Ingår i: Studies in Health Technology and Informatics, Volume 52. - Australia : IOS Press. - 9789051994070 ; , s. 207-211
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Konferensbidrag (refereegranskat)abstract
- A Swedish data model for handling terminology, Spriterm, is presented in this paper. A prototype terminology management system, using the Spriterm data model in also described. This prototype is implemented is Microsoft ACCESS. Furthermore, two other applications using this prototype as a base are introduced. One World Wide Web based application, and a data dictionary.
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| 26. |
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| 27. |
- Carlsson, Mats, 1965-, et al.
(författare)
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Modelling and reclassification of surgical procedures : experiences from the use of GALEN methods in the domain of thoracic surgery
- 2000
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Ingår i: Medical informatics and the Internet in medicine (Print). - : Informa UK Limited. - 1463-9238 .- 1464-5238. ; 25:2, s. 109-122
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Tidskriftsartikel (refereegranskat)abstract
- This paper reports on experiences fromthe evaluation of GALEN methods for mapping of follow-up categories in the domain of thoracic surgery to an existing classification of surgical procedures. The mapping of the aggregated levels or groups of thoracic procedures presents a genuine problem in relation to strict hierarchical classifications, since the follow-up categories do not necessarily fit in the pre-set structure of the classification. Experiences from modelling of the traditional classification and of the follow-up categories are reported, and an analysis of the results is presented along with a discussion of opportunities and potential problems and pitfalls when applying GALEN models and tools.
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| 28. |
- Carlsson, Mats, 1965-, et al.
(författare)
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Terminology support for development of sharable knowledge modules
- 1996
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Ingår i: Informatics for Health and Social Care. - : Informa UK Limited. - 1753-8157 .- 1753-8165. ; 21:3, s. 207-214
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Tidskriftsartikel (refereegranskat)abstract
- Lack of an agreed infrastructure for terminology is identified as one of the major barriers to interchange of knowledge modules and integration of knowledge bases with other clinical information systems. The goal of the GALEN project is to bridge this gap between different terminology systems through the construction of a terminology server, which is based on a rich conceptual model with mapping facilities to natural language expressions and coding schemas. The long term goal is to support communication between medical information systems. Arden Syntax is a standard format for the creation of knowledge modules, with sharability as one of the main objectives. Since Arden Syntax is based on a data-driven approach, the data items used need to be adapted to locally available terminology. The GALEN approach appears to be complementary to Arden Syntax and to the development of sharable knowledge modules. The major theme of this paper is utilization of the GALEN terminology server for knowledge module authoring. Two systems are presented, a knowledge base manager and a client to the terminology server, allowing the user to navigate in the semantic network and to import concept definitions and terms into the knowledge modules. The benefit of the terminology services is discussed.
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| 29. |
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| 30. |
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| 31. |
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| 32. |
- Karlsson, Daniel, 1969-, et al.
(författare)
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Using the MEDLINE® database to study the concept of urinary tract infections in different domains of medicine
- 2004
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Ingår i: Upsala Journal of Medical Sciences. - 0300-9734 .- 2000-1967. ; 109:2, s. 141-157
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Tidskriftsartikel (refereegranskat)abstract
- As a way of exploring differences between medical domains regarding management of urinary tract infections, we investigated the MEDLINE® database for differences in indexing patterns. Further, our intention was to assess the MEDLINE® database as a source for studying medical domains. We examined the use of main headings, subheadings and the level of main headings in six medical domains that manage urinary tract infections. Many intuitive but also some counterintuitive results were found indicating that the MEDLINE® database is difficult to use for studying medical domains mainly due to unclear semantics both in the headings and the indexing process, which results in variability in indexing. This variability probably hides sig-nificant results. We also conclude that the differences found indicate that in addition to differences between domains, there are also large variations within domains.
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| 33. |
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| 34. |
- Nilsson, Gunnar, et al.
(författare)
-
Computerisation, coding, data retrieval and related attitudes among Swedish general practitioners - A survey of necessary conditions for a database of diseases and health problems
- 2002
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Ingår i: International Journal of Medical Informatics. - 1386-5056 .- 1872-8243. ; 65:2, s. 135-143
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Tidskriftsartikel (refereegranskat)abstract
- Objective: To investigate necessary conditions for the establishment of a database of diseases and health problems for research and health care planning, based on electronic patient records in everyday clinical use among general practitioners (GPs). Design: Postal questionnaire study. Setting: Primary health care in Sweden. Subjects: Three hundred randomly selected GPs. Main outcome measures: Degree of computerisation of patient records. User frequency and characteristics of diagnosis classification systems and coding tools. Frequency of coding activities and retrieval of codes, and related attitudes. Opinions on a primary health care version of ICD-10. Results: A total of 184 GPs (61% of the 300 GPs) were included in the study. About 92% used an electronic record system, some type of diagnostic classification was used by 93%, and ICD based classifications by 88%. The classification in use was computerised for 74%. Mainly simple tools were used to retrieve diagnostic codes. About 76% of GPs reported classifying at least one symptom or disease per encounter. The codes were retrieved 'once a month' or more by 19%. Classification of diseases was considered important for follow-up by 83%, and for the care of the patient by 75% of the GPs. The primary health care version of ICD-10 with a total of 972 codes was considered too limited in size by 31%. Conclusion: Electronic patient records in everyday clinical use in Swedish general practice provide several fundamentals for a database of diagnostic data. However, there are several barriers to the establishment of such a database that is both valid and reliable. ⌐ 2002 Elsevier Science Ireland Ltd. All rights reserved.
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| 35. |
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| 36. |
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| 37. |
- Nilsson, Gunnar, et al.
(författare)
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Evaluation of three Swedish ICD-10 primary care versions : reliability and ease of use in diagnostic coding
- 2000
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Ingår i: Methods of Information in Medicine. - 0026-1270. ; 39:4-5, s. 325-331
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Tidskriftsartikel (refereegranskat)abstract
- If computer-stored information is to be useful for purposes other than patient care, reliability of the data is of utmost importance. In primary healthcare settings, however, it has been found to be poor. This paper presents a study on the influence of coding tools on reliability and user acceptance. Six general practitioners coded 152 medical problems each by means of three versions of ICD-10, one with a compositional structure. At code level the reliability was poor and was almost identical when the three versions were compared. At aggregated level the reliability was good and somewhat better in the compositional structure. Ideas for improved user acceptance arose, and the study explored the need for several different tools to retrieve diagnostic codes.
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| 38. |
- Nilsson, Gunnar H., et al.
(författare)
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Patients, general practitioners, diseases and health problems in urban general practice: a cross-sectional study on electronic patient records
- 2008
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Ingår i: Primary Health Care Research & Development. - : Cambridge University Press (CUP). - 1463-4236 .- 1477-1128. ; 9:02, s. 119-125
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Tidskriftsartikel (refereegranskat)abstract
- Background: Statistics from primary health care in Sweden, as well as from other Nordic countries, have been sparse. The electronic patient records (EPR) will be an increasingly important source of clinical information. The aim of this study was to investigate types of encounters, managed diseases and health problems, and characteristics of patients and general practitioners (GPs) in everyday general practice using EPR. Methods: A multi-centre, cross-sectional database study of EPR in primary health care in Stockholm, Sweden. Twenty-six randomly selected GPs with 20 randomly selected encounters each. Main outcome measures were the number and distribution of diseases and health problems, age and gender of patients and GPs, and type of encounter. Results: The mean age of the patients was 51.2 years, 30.2% were aged 75 years or older, and 57.5% were women. The mean number of managed problems per encounter was 1.4. The most common specific diagnoses were essential hypertension (9.3% of the encounters) and acute upper respiratory infections (8.8%). Older patients had more health problems in each encounter (P = 0.000001). GPs differed regarding the characteristics of their patients, including sex, age and number of health problems managed at each encounter. The patients of different GPs differed regarding sex, age and number of health problems managed. Female and male patients had different diagnostic panoramas and they had a tendency to encounter a GP of the same sex (odds ratio 1.5, P = 0.053). Conclusions: We found that two diagnoses (essential hypertension and acute upper respiratory infections), four diagnostic groups, women and the elderly are predominant. Female and male patients have different diagnostic panoramas and they have a tendency to encounter a GP of the same sex. GPs differ regarding the characteristics of their patients, including sex, age and number of health problems managed at each encounter.
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| 39. |
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| 40. |
- Nilsson, Gunnar, et al.
(författare)
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Textual content, health problems and diagnostic codes in electronic patient records in general practice
- 2003
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Ingår i: Scandinavian Journal of Primary Health Care. - : Informa UK Limited. - 0281-3432 .- 1502-7724. ; 21:1, s. 33-36
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Tidskriftsartikel (refereegranskat)abstract
- Objective - To investigate textual content, health problems and diagnostic codes in everyday electronic patient records. Design - Retrospective and observational database study. Setting - Primary health care in Stockholm. Subjects - Twenty randomly selected general practitioners with 20 records each. Main outcome measures - The frequency of use of problem-oriented medical records. The number of words, problems and diagnostic codes. The completeness and correctness of the diagnostic codes. Results - About 14.5% of 400 studied records were problem-oriented. The mean number of words per record was 99.4, and the mean number of problems managed per record was 1.2. On average, there were 1.1 diagnostic codes per record and this differed widely among GPs and also among the electronic patient record systems. The mean number of codes per problem was 0.9, and the proportion of correct codes was 97.4%. Conclusions - The electronic patient records in general practice in Stockholm have an extensive textual content. A vast majority of the problems are coded and the completeness and correctness of diagnostic codes are high. It seems that problem-oriented electronic patient record systems enforce coding activities. It is feasible to establish a database of diagnostic data for research and health care planning based on electronic patient records.
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| 41. |
- Nyström, Mikael, 1977-, et al.
(författare)
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Creating a medical dictionary using word alignment : The influence of sources and resources
- 2007
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Ingår i: BMC Medical Informatics and Decision Making. - : Springer Science and Business Media LLC. - 1472-6947. ; 7:37
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Tidskriftsartikel (refereegranskat)abstract
- Background. Automatic word alignment of parallel texts with the same content in different languages is among other things used to generate dictionaries for new translations. The quality of the generated word alignment depends on the quality of the input resources. In this paper we report on automatic word alignment of the English and Swedish versions of the medical terminology systems ICD-10, ICF, NCSP, KSH97-P and parts of MeSH and how the terminology systems and type of resources influence the quality. Methods. We automatically word aligned the terminology systems using static resources, like dictionaries, statistical resources, like statistically derived dictionaries, and training resources, which were generated from manual word alignment. We varied which part of the terminology systems that we used to generate the resources, which parts that we word aligned and which types of resources we used in the alignment process to explore the influence the different terminology systems and resources have on the recall and precision. After the analysis, we used the best configuration of the automatic word alignment for generation of candidate term pairs. We then manually verified the candidate term pairs and included the correct pairs in an English-Swedish dictionary. Results. The results indicate that more resources and resource types give better results but the size of the parts used to generate the resources only partly affects the quality. The most generally useful resources were generated from ICD-10 and resources generated from MeSH were not as general as other resources. Systematic inter-language differences in the structure of the terminology system rubrics make the rubrics harder to align. Manually created training resources give nearly as good results as a union of static resources, statistical resources and training resources and noticeably better results than a union of static resources and statistical resources. The verified English-Swedish dictionary contains 24,000 term pairs in base forms. Conclusion. More resources give better results in the automatic word alignment, but some resources only give small improvements. The most important type of resource is training and the most general resources were generated from ICD-10. © 2007 Nyström et al, licensee BioMed Central Ltd.
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| 42. |
- Nyström, Mikael, 1977-, et al.
(författare)
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Creating a medical English-Swedish dictionary using interactive word alignment
- 2006
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Ingår i: BMC Medical Informatics and Decision Making. - : Springer Science and Business Media LLC. - 1472-6947. ; 6:35
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Tidskriftsartikel (refereegranskat)abstract
- Background: This paper reports on a parallel collection of rubrics from the medical terminology systems ICD-10, ICF, MeSH, NCSP and KSH97-P and its use for semi-automatic creation of an English-Swedish dictionary of medical terminology. The methods presented are relevant for many other West European language pairs than English-Swedish. Methods: The medical terminology systems were collected in electronic format in both English and Swedish and the rubrics were extracted in parallel language pairs. Initially, interactive word alignment was used to create training data from a sample. Then the training data were utilised in automatic word alignment in order to generate candidate term pairs. The last step was manual verification of the term pair candidates. Results: A dictionary of 31,000 verified entries has been created in less than three man weeks, thus with considerably less time and effort needed compared to a manual approach, and without compromising quality. As a side effect of our work we found 40 different translation problems in the terminology systems and these results indicate the power of the method for finding inconsistencies in terminology translations. We also report on some factors that may contribute to making the process of dictionary creation with similar tools even more expedient. Finally, the contribution is discussed in relation to other ongoing efforts in constructing medical lexicons for non-English languages. Conclusion: In three man weeks we were able to produce a medical English-Swedish dictionary consisting of 31,000 entries and also found hidden translation errors in the utilized medical terminology systems. © 2006 Nyström et al, licensee BioMed Central Ltd.
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| 43. |
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| 44. |
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| 45. |
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| 46. |
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| 47. |
- Petersson, Håkan, 1972-, et al.
(författare)
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Semantic modeling of a traditional classification : results and implications
- 1998
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Ingår i: Medinfo ‘98. - Australia : IOS Press. - 9789051994070 ; , s. 613-617
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Konferensbidrag (refereegranskat)abstract
- A primary health care version of the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10), together with a three-dimensional model for classification of diseases according to locations, origin, and type has been semantically represented. The resulting computer-based version is made available via the World Wide Web.
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| 48. |
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| 49. |
- Petersson, Håkan, 1972-, et al.
(författare)
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The connection between terms used in medical records and coding system : a study on Swedish primary health care data
- 2001
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Ingår i: Medical informatics and the Internet in medicine (Print). - : Informa UK Limited. - 1463-9238 .- 1464-5238. ; 26:2, s. 87-99
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Tidskriftsartikel (refereegranskat)abstract
- Implementation of problem lists and their relation to standardized coding systems have been approached and analysed in different ways. Most evaluations concern quantitative aspects such as content coverage in a specific domain. In order to reveal the qualitative aspects of diagnostic coding, medical record texts from primary health care encounters were compared with terms from a coding system that was used for describing them statistically. The records were coded by six general practitioners, and in some cases, an applied diagnostic term was found within the text, while other record text-coding system relationships were categorized as synonyms, alternative terms, and interpretations. Thus, the categories roughly corresponded to a measure of semantic distance between the terms in the record text and the rubrics of the coding system, and there was a correlation between semantic distance and inter-rater agreement. The subcategories of this scheme corresponded fairly well to recently published desiderata for clinical terminology servers, including functionality such as word normalization and spelling correction. However, not all problems could have been automatically coded by means of lexical methods, which can be partly explained by the fact that diagnostic coding also relies on clinical knowledge. In addition, proper automation relies on context representation within the records.
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| 50. |
- Sundvall, Erik, 1973-, et al.
(författare)
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Graphical Overview and Navigation of Electronic Health Records in a prototyping environment using Google Earth and openEHR Archetypes
- 2007
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Ingår i: MEDINFO 2007 - Proceedings of the 12th World Congress on Health (Medical) Informatics – Building Sustainable Health Systems. - : IOS Press. - 9781586037741 ; 129:Pt 2, s. 1043-7
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Konferensbidrag (refereegranskat)abstract
- This paper describes selected earlier approaches to graphically relating events to each other and to time; some new combinations are also suggested. These are then combined into a unified prototyping environment for visualization and navigation of electronic health records. Google Earth (GE) is used for handling display and interaction of clinical information stored using openEHR data structures and ‘archetypes’. The strength of the approach comes from GE's sophisticated handling of detail levels, from coarse overviews to fine-grained details that has been combined with linear, polar and region-based views of clinical events related to time. The system should be easy to learn since all the visualization styles can use the same navigation.The structured and multifaceted approach to handling time that is possible with archetyped openEHR data lends itself well to visualizing and integration with openEHR components is provided in the environment.
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