| 1. |
- Almborg, Ann-Helene, et al.
(författare)
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Discharge planning of stroke patients : the relatives' perceptions of participation
- 2009
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Ingår i: Journal of Clinical Nursing. - 0962-1067 .- 1365-2702. - 0962-1067 ; 18:6, s. 857-865
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Tidskriftsartikel (refereegranskat)abstract
- To describe relatives' perceived participation in discharge planning for patients with stroke and identify correlates to perceived participation. Stroke affects both patients and their relatives and previous research shows that relatives were often dissatisfied with their perceived involvement in discharge planning and the information they get. Prospective cross-sectional study. The study comprised 152 consecutively enrolled relatives (mean age = 60.8 years) of acute stroke patients admitted to a stroke unit in southern Sweden during 2003-2005. Data were collected through interviews 2-3 weeks after discharge using 'Relative's Questionnaire about Participation in Discharge planning'. This instrument measures perceived participation in three subscales: R-Information-Illness, R-Information-Care/support, and R-Goals and Needs. The Overall Rating of Relative's Perceived Participation in Discharge Planning was measured by a visual analogue scale (VAS) (1-10 score). Among the relatives, 56-68% reported positively according to R-Information-Illness, but 46-53% perceived that they did not receive any information about care/medication/rehabilitation/support. About 80% perceived no participation at all in goals and needs. The mean value of the VAS was 3.89 (SD 3.40) score. Regression analyses revealed that longer stay at hospital, patients with higher education, and relatives of female patients and female relatives were associated with relatives' perceptions of higher participation in discharge planning. Relatives perceived that they needed more information and knowledge about stroke and care/medication/rehabilitation/support. They also needed to be more involved in goal-setting and in identifying patient needs. Professionals should take into consideration these associated variables to improve relatives' perceived participation. Clinicians should give more attention to the altered situation of stroke patients' relatives when planning for continuing care and when setting postdischarge goals for the patients. The professionals need to develop strategies to involve relatives in sharing information, goal-setting and needs assessment in discharge planning.
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| 2. |
- Grote, Ludger, 1964, et al.
(författare)
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National Knowledge-Driven Management of Obstructive Sleep Apnea-The Swedish Approach
- 2023
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Ingår i: Diagnostics. - : MDPI AG. - 2075-4418. ; 13:6
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: This paper describes the development of "Swedish Guidelines for OSA treatment" and the underlying managed care process. The Apnea Hypopnea Index (AHI) is traditionally used as a single parameter for obstructive sleep apnea (OSA) severity classification, although poorly associated with symptomatology and outcome. We instead implement a novel matrix for shared treatment decisions based on available evidence. Methods: A national expert group including medical and dental specialists, nurses, and patient representatives developed the knowledge-driven management model. A Delphi round was performed amongst experts from all Swedish regions (N = 24). Evidence reflecting treatment effects was extracted from systematic reviews, meta-analyses, and randomized clinical trials. Results: The treatment decision in the process includes a matrix with five categories from a "very weak"" to "very strong" indication to treat, and it includes factors with potential influence on outcome, including (A) OSA-related symptoms, (B) cardiometabolic comorbidities, (C) frequency of respiratory events, and (D) age. OSA-related symptoms indicate a strong incitement to treat, whereas the absence of symptoms, age above 65 years, and no or well-controlled comorbidities indicate a weak treatment indication, irrespective of AHI. Conclusions: The novel treatment matrix is based on the effects of treatments rather than the actual frequency of respiratory events during sleep. A nationwide implementation of this matrix is ongoing, and the outcome is monitored in a prospective evaluation by means of the Swedish Sleep Apnea Registry (SESAR).
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| 3. |
- Le Toan, T., et al.
(författare)
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Biomass retrieval from P-band polarimetric and interferometric SAR data, challenges and recent results
- 2014
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Ingår i: Joint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014; Quebec City; Canada; 13 July 2014 through 18 July 2014. - 9781479957750 ; , s. 1417-1420
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Konferensbidrag (refereegranskat)abstract
- In the frame of the Biomass mission activities, this paper presents the challenges and recent results in the retrieval of forest biomass from polarimetric (PolSAR) and interferometric (PolInSAR) P-band SAR data. During the mission Phase A, critical issues in the biomass retrieval algorithms in boreal and tropical forests have been identified and addressed. In boreal forest, multi polarization backscatter data can be used to mitigate much of the variability due to environment effects. In high biomass tropical forest, because of the low sensitivity of the backscatter to biomass, appropriate correction methods were developed to mitigate the disturbing effects. Also to enhance the retrieval results, a combination of PolSAR and PolInSAR methods was proposed.
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| 4. |
- Le Toan, T., et al.
(författare)
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The BIOMASS mission retrieval algorithms: Results from recent campaigns
- 2012
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Ingår i: Proc. IGARSS 2012, IEEE International Geoscience and Remote Sensing Symposium, Munich, Germany, 22-27 July 2012. - 2153-6996. - 9781467311588 ; , s. 5546-5549
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Konferensbidrag (refereegranskat)abstract
- The BIOMASS mission is designed to map the full range of the world's above-ground forest biomass, for the needs of national scale inventory and global carbon flux calculations. This objective is achieved with advanced P-band SAR techniques. The P-band biomass measurement concept was based on previous work over the past two decades. During the preparatory phase, new campaigns have been conducted to address critical issues on the biomass retrieval algorithms, over tropical and boreal forests. The collected datasets comprise accurate and complete sets of in situ data and advanced P-band SAR data. This paper presents the retrieval algorithms developed using the collected datasets.
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| 5. |
- Quegan, S., et al.
(författare)
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The science and measurement concepts underlying the BIOMASS mission
- 2012
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Ingår i: Proc. IGARSS 2012, IEEE International Geoscience and Remote Sensing Symposium, Munich, Germany, 22-27 July 2012. - 2153-6996. - 9781467311588 ; , s. 5542-5545
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Konferensbidrag (refereegranskat)abstract
- The BIOMASS mission is designed to provide unique information on the biomass in the world's forests at spatial and temporal resolutions suitable for characterizing their dynamics and their contribution to carbon cycle estimates. To achieve this it combines biomass estimates from direct inversion of polarimetric backscattering coefficients with Pol-InSAR forest height estimates. The mission will also support important secondary objectives, including sub-surface imaging in arid zones, production of a bare-earth DTM and ice applications, and is optimized to be robust against environmental and ionospheric disturbances.
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| 6. |
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| 7. |
- Fransson, J.E.S., et al.
(författare)
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Detection of storm-damaged forested areas using airborne CARABAS-II VHF SAR image data
- 2002
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Ingår i: IEEE Transactions on Geoscience and Remote Sensing. - 0196-2892 .- 1558-0644. ; 40:10, s. 2170-2175
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Tidskriftsartikel (refereegranskat)abstract
- Strong winds cause severe damage worldwide to forested land every year. The devastating storms that struck large parts of Europe in late 1999 destroyed the equivalent of several years of normal forest harvesting, amounting to very large economical sums. Therefore, rapid mapping of damaged areas is of major importance for assessment of short-term actions as well as for long-term reforestation purposes. In this paper, the use of airborne CARABAS-II very high frequency (VHF) (20-90 MHz) synthetic aperture radar (SAR) imagery for high spatial resolution mapping of wind-thrown forests has been investigated and evaluated. The investigation was performed at a test site located in southern Sweden and dominated by Norway spruce forests. A regression model estimating radar backscattering amplitude prior to the storm was developed. The estimated amplitudes were compared to measured amplitudes after the storm. The results clearly show that the backscattering amplitude, at a given stem volume, is considerably higher for wind-thrown forests than for unaffected forests. Furthermore, the backscattering from fully harvested storm-damaged areas was, as expected, significantly lower than from unaffected stands. These findings imply that VHF SAR imagery has potential for mapping wind-thrown forests. However, to prevent ambiguities in increased backscattering caused by normal stem volume growth or wind-fellings, multitemporal change detection techniques using VHF SAR images acquired prior to and after wind-fellings would be preferable.
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| 8. |
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| 9. |
- Le Toan, T., et al.
(författare)
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The BIOMASS mission: Mapping global forest biomass to better understand the terrestrial carbon cycle
- 2011
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Ingår i: Remote Sensing of Environment. - : Elsevier BV. - 0034-4257. ; 115, s. 2850-2860
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Tidskriftsartikel (refereegranskat)abstract
- In response to the urgent need for improved mapping of global biomass and the lack of any current spacesystems capable of addressing this need, the BIOMASS mission was proposed to the European Space Agency forthe third cycle of Earth Explorer Core missions and was selected for Feasibility Study (Phase A) in March 2009.The objectives of the mission are 1) to quantify the magnitude and distribution of forest biomass globally toimprove resource assessment, carbon accounting and carbon models, and 2) tomonitor and quantify changesin terrestrial forest biomass globally, on an annual basis or better, leading to improved estimates of terrestrialcarbon sources (primarily from deforestation); and terrestrial carbon sinks due to forest regrowth andafforestation. These science objectives require the mission to measure above-ground forest biomass from 70° Nto 56° S at spatial scale of 100–200 m, with error not exceeding ±20% or ±10 t ha−1 and forest height witherror of ±4 m. To meet the measurement requirements, the mission will carry a P-Band polarimetric SAR(centre frequency 435 MHz with 6 MHz bandwidth) with interferometric capability, operating in a dawn-duskorbit with a constant incidence angle (in the range of 25°–35°) and a 25–45 day repeat cycle. During its 5-yearlifetime, the mission will be capable of providing both direct measurements of biomass derived from intensitydata and measurements of forest height derived from polarimetric interferometry. The design of the BIOMASSmission spins together two main observational strands: (1) the long heritage of airborne observations intropical, temperate and boreal forest that have demonstrated the capabilities of P-band SAR for measuringforest biomass; (2) new developments in recovery of forest structure including forest height from Pol-InSAR,and, crucially, the resistance of P-band to temporal decorrelation, which makes this frequency uniquelysuitable for biomass measurements with a single repeat-pass satellite. These two complementarymeasurement approaches are combined in the single BIOMASS sensor, and have the satisfying property thatincreasing biomass reduces the sensitivity of the former approach while increasing the sensitivity of the latter.This paper surveys the body of evidence built up over the last decade, from a wide range of airborneexperiments, which illustrates the ability of such a sensor to provide the required measurements.At present, the BIOMASS P-band radar appears to be the only sensor capable of providing the necessary globalknowledge about the world's forest biomass and its changes. In addition, this first chance to explore the Earth'senvironment with a long wavelength satellite SAR is expected to make yield new information in a range ofgeoscience areas, including subsurface structure in arid lands and polar ice, and forest inundation dynamics.
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| 10. |
- Lin, Chung-Ying, et al.
(författare)
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A thorough psychometric comparison between Athens Insomnia Scale and Insomnia Severity Index among patients with advanced cancer
- 2020
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Ingår i: Journal of Sleep Research. - : John Wiley & Sons. - 0962-1105 .- 1365-2869. ; 29:1
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Tidskriftsartikel (refereegranskat)abstract
- For patients with cancer, sleep disturbance is commonplace. Using classical test theory and Rasch analyses, the present study compared two commonly used psychometric instruments for insomnia – Athens Insomnia Scale and Insomnia Severity Index – among patients with advanced cancer. Through convenience sampling, patients with cancer at stage III or IV (n = 573; 326 males; mean age = 61.3 years; SD = 10.7) from eight oncology units of university hospitals in Iran participated in the study. All the participants completed the Athens Insomnia Scale, Insomnia Severity Index, Edmonton Symptom Assessment Scale, Hospital Anxiety and Depression Scale, General Health Questionnaire-12, Epworth Sleepiness Scale and Pittsburgh Sleep Quality Index. Additionally, 433 participants wore an Actigraph device for two continuous weekdays. Classical test theory and Rasch analysis both supported the construct validity for Athens Insomnia Scale (factor loadings from confirmatory factor analysis = 0.61–0.87; test–retest reliability = 0.72–0.82; infit mean square = 0.81–1.17; outfit MnSq = 0.79–1.14) and for Insomnia Severity Index (factor loadings from confirmatory factor analysis = 0.61–0.81; test–retest reliability = 0.72–0.82; infit mean square = 0.72–1.14; outfit mean square = 0.76–1.11). Both Athens Insomnia Scale and Insomnia Severity Index had significant associations with Edmonton Symptom Assessment Scale, Hospital Anxiety and Depression Scale, General Health Questionnaire-12, Epworth Sleepiness Scale and Pittsburgh Sleep Quality Index, as well as having good sensitivity and specificity. Significant differences in the actigraphy measure were found between insomniacs and non-insomniacs based on Athens Insomnia Scale or Insomnia Severity Index score. With promising results, healthcare providers can use either Athens Insomnia Scale or Insomnia Severity Index to understand the insomnia of patients with advanced cancer.
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