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Sökning: WFRF:(Adolfsson Jan)

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51.
  • Bostwick, DG, et al. (författare)
  • Epidemiology and statistical methods in prediction of patient outcome.
  • 2005
  • Ingår i: Scand J Urol Nephrol Suppl. - : Informa UK Limited. ; 39:216, s. 94-110
  • Tidskriftsartikel (refereegranskat)abstract
    • Substantial gaps exist in the data of the assessment of risk and prognosis that limit our understanding of the complex mechanisms that contribute to the greatest cancer epidemic, prostate cancer, of our time. This report was prepared by an international multidisciplinary committee of the World Health Organization to address contemporary issues of epidemiology and statistical methods in prostate cancer, including a summary of current risk assessment methods and prognostic factors. Emphasis was placed on the relative merits of each of the statistical methods available. We concluded that: An international committee should be created to guide the assessment and validation of molecular biomarkers. The goal is to achieve more precise identification of those who would benefit from treatment. Prostate cancer is a predictable disease despite its biologic heterogeneity. However, the accuracy of predicting it must be improved. We expect that more precise statistical methods will supplant the current staging system. The simplicity and intuitive ease of using the current staging system must be balanced against the serious compromise in accuracy for the individual patient. The most useful new statistical approaches will integrate molecular biomarkers with existing prognostic factors to predict conditional life expectancy (i.e. the expected remaining years of a patient's life) and take into account all-cause mortality.
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52.
  • Brasso, Klaus, et al. (författare)
  • Differences in survival from prostate cancer in Denmark, Iceland and Sweden
  • 2013
  • Ingår i: European Journal of Cancer. - : Elsevier BV. - 0959-8049 .- 1879-0852. ; 49:8, s. 1984-1992
  • Tidskriftsartikel (refereegranskat)abstract
    • Introduction: Register-based studies have shown large survival differences among prostate cancer patients in the Nordic countries. The aim of this study was to determine the background of such differences in Denmark, Iceland and Sweden. Material and methods: Patients with prostate cancer were identified through population-based cancer registers in the three countries. Clinical findings at diagnosis were retrieved from hospital records. In Sweden, clinical information was gathered from regional population-based prostate cancer registers. Country-specific incidence and excess mortality rates were compared, with adjustment for prognostic factors. Results: The relative survival in the cohorts was comparable to that in previous population-based studies. Significant differences in excess mortality rates were found across countries, which diminished or disappeared after adjustment for patient characteristics, i.e. metastatic status, clinical T stage and prostate-specific antigen level. A difference in the proportion of patients with metastatic disease was the main explanation of the differences in survival among countries, while the incidence rates of metastatic cancer were similar. Discussion: Register-based studies of the relative survival of prostate cancer patients are influenced by national differences in clinical presentation at diagnosis. Differences in the proportion of patients with metastatic spread explained most of the difference in relative survival among patients in Denmark, Iceland and Sweden. Future country comparisons of relative survival should include adjustment for differences in patient characteristics, such as stage, prostate-specific antigen level and screening intensity.
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53.
  • Bratt, Ola, et al. (författare)
  • Effects of prostate-specific antigen testing on familial prostate cancer risk estimates
  • 2010
  • Ingår i: Journal of the National Cancer Institute. - : Oxford Journals. - 0027-8874 .- 1460-2105. ; 102:17, s. 1336-1343
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Family history is a strong risk factor for prostate cancer. The aim of this study was to investigate whether increased diagnostic activity is related to the incidence of prostate cancer among brothers of men with prostate cancer. Methods Data were from the nationwide population-based Prostate Cancer Database Sweden (PCBaSe Sweden), which includes data from the National Prostate Cancer Register, the Swedish Cancer Register, the Register of the Total Population, the Multi-Generation Register, and the Census database. We investigated the relationship of tumor characteristics, time from diagnosis of the index patient (ie, prostate cancer patients in the National Prostate Cancer Register for whom at least one brother and their father could be identified), calendar period, geographic factors, and socioeconomic status to standardized incidence ratios (SIRs) for prostate cancer among 22 511 brothers of 13 975 index patients in PCBaSe Sweden. Results Brothers of index patients with prostate cancer were at increased risk for a diagnosis of prostate cancer (SIR = 3.1, 95% confidence interval [CI] = 2.9 to 3.3). Risk was higher for T1c tumors (SIR = 3.4, 95% CI = 3.2 to 3.8) than for metastatic tumors (SIR = 2.0, 95% CI = 1.5 to 2.6), and risk of T1c tumors was especially high during the first year after the diagnosis of the index patient (SIR = 4.3, 95% CI = 3.8 to 4.9), compared with the following years (SIR range = 2.8–3.3), and for brothers of index patients who had a higher socioeconomic status (SIR = 4.2, 95% CI = 3.7 to 4.7), compared with brothers of index patients with lower socioeconomic status (SIR = 2.8, 95% CI = 2.4 to 3.2). Conclusions Increased diagnostic activity among men with a family history of prostate cancer appears to contribute to their increased risk of prostate cancer and to lead to detection bias in epidemiological and genetic studies of familial prostate cancer.
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54.
  • Buntrock, Stefan, et al. (författare)
  • The Internet and prostate cancer patients Searching for and finding information.
  • 2007
  • Ingår i: Scandinavian journal of urology and nephrology. - : Informa UK Limited. - 0036-5599 .- 1651-2065. ; 41:5, s. 367-74
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective. To define the characteristics of prostate cancer patients who use the Internet. Material and methods. In October 2002, 511 prostate cancer patients from Stockholm-Gotland County completed a postal questionnaire consisting of 146 questions regarding use of the Internet, demographic factors, level of information about the disease and its treatment, quality of life and trade-off possibilities. Results. The response rate was 86.5% (n=511) and the mean age of the respondents was 71 years. A total of 210 men (41.1%) had access to the Internet. Eighty-two men (16.4%) had looked for information on prostate cancer, either by themselves or with the aid of others. Among men aged 50-60 years, 39% were Internet users, compared to 8% among men aged 75-80 years; the figures for university graduates versus those who had only attended elementary school were 33% and 3%, respectively. Fifty of the 82 men (61%) who searched for information regarded themselves as being satisfactorily informed by online information. Conclusions. Of the men in this cohort, 16% searched the Internet for information regarding their prostate cancer. Young and well-educated men utilized the Internet more frequently than others, but they did not find information more often than older and less well-educated men. It is possible that the Internet promotes social inequality in obtaining healthcare in favor of well-educated, highly paid individuals.
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55.
  • Carlsson, Sigrid, 1982, et al. (författare)
  • Risk of suicide in men with low-risk prostate cancer
  • 2013
  • Ingår i: European Journal of Cancer. - : Elsevier BV. - 0959-8049 .- 1879-0852. ; 49:7, s. 1588-1599
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose:Risk of suicide is increased among men with prostate cancer. We investigated this association among men with low-risk cancer, usually detected by prostate specific antigen (PSA)-testing.Patients and Methods:Relative risk (RR) of suicide was calculated by use of Poisson regression analysis within the Prostate Cancer data Base Sweden (PCBaSe) 2.0, a nation-wide, population-based database, comparing 105,736 men diagnosed with prostate cancer between 1997-2009 to 528,658 matched prostate cancer-free men.Results:During the first 6 months after diagnosis, there were 38 suicides among men with prostate cancer; incidence rate 0.73 per 1000 person-years (PY) and 30 suicides in the comparison cohort; 0.11 per 1000 PY, corresponding to a RR of suicide of 6.5 (95% confidence interval (CI) 4.0-10). Risk was highest among men with distant metastases, incidence rate 1.25 per 1000 PY, RR 10 (95% CI 5.1-21) but risk was also increased for men with low-risk tumours, incidence rate difference 0.45 per 1000 PY and RR 5.2 (95% CI 2.3-12) and across categories of socioeconomic status and comorbidity. Eighteen months after diagnosis, risk of suicide had decreased to 0.27 per 1000 PY, RR 1.0 (95% CI 0.68-1.5) for low-risk prostate cancer but remained increased among men with metastases, 0.57 per 1000 PY, RR 1.8 (95% CI 1.1-2.9).Conclusion:Although the increase in absolute risk of suicide was modest, our findings reflect the severe psychological stress that prostate cancer patients may experience after diagnosis. The increased risk of suicide observed in men with prostate cancer, including low-risk, calls for increased awareness.
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56.
  • Colzani, Edoardo, et al. (författare)
  • Risk of hospitalization and death due to bone fractures after breast cancer: a registry-based cohort study
  • 2016
  • Ingår i: British Journal of Cancer. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 0007-0920 .- 1532-1827.
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Bone fractures may have an impact on prognosis of breast cancer. The long-term risks of bone fracture in breast cancer patients have not been thoroughly studied. METHODS: Poisson regression was used to investigate the incidence of hospitalisation due to bone fracture comparing women with and without breast cancer based on Swedish National registers. Cox regression was used to investigate the risk of being hospitalised with bone fracture, and subsequent risk of death, in a regional cohort of breast cancer patients. RESULTS: For breast cancer patients, the 5-year risk of bone fracture hospitalisation was 4.8% and the 30-day risk of death following a bone fracture hospitalisation was 2.0%. Compared with the general population, breast cancer patients had incidence rate ratios of 1.25 (95% CI: 1.23-1.28) and 1.18 (95% CI: 1.14-1.22) for hospitalisation due to any bone fracture and hip fracture, respectively. These ratios remained significantly increased for 10 years. Comorbidities (Charlson Comorbidity Index 1) were associated with the risk of being hospitalised with bone fracture. Women taking aromatase inhibitors were at an increased risk as compared with women taking tamoxifen (HR=1.48; 95% CI: 0.98-2.22). Breast cancer patients hospitalised for a bone fracture showed a higher risk of death (HR=1.83; 95% CI: 1.50-2.22) compared with those without bone fracture. CONCLUSIONS: Women with a previous breast cancer diagnosis are at an increased risk of hospitalisation due to a bone fracture, particularly if they have other comorbidities.
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57.
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58.
  • Crawley, Danielle, et al. (författare)
  • A systematic review of the literature exploring the interplay between prostate cancer and type two diabetes mellitus
  • 2018
  • Ingår i: ecancermedicalscience. - : Ecancer Global Foundation. - 1754-6605. ; 12
  • Forskningsöversikt (refereegranskat)abstract
    • Prostate cancer (PCa) and type two diabetes mellitus (T2DM) are both increasing prevalent conditions and often occur concurrently. However, the relationship between the two is more complex than just two prevalent conditions co-existing. This review systematically explores the literature around the interplay between the two conditions. It covers the impact of pre-existing T2DM on PCa incidence, grade and stage, as well as exploring the impact of T2DM on PCa outcomes and mortality and the interaction between T2DM and PCa treatments.
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59.
  • Crawley, Danielle, et al. (författare)
  • Association between duration and type of androgen deprivation therapy and risk of diabetes in men with prostate cancer
  • 2016
  • Ingår i: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 139:12, s. 2698-2704
  • Tidskriftsartikel (refereegranskat)abstract
    • Androgen deprivation therapy (ADT) for prostate cancer (PCa) increases risk of type 2 diabetes (T2DM); however the association between types and duration of ADT has not been fully elucidated. We examined how type and duration of ADT affects risk of T2DM. Using data from Prostate Cancer database Sweden (PCBaSe) we investigated risk of T2DM in a cohort of 34,031 men with PCa on ADT; i.e., anti-androgens (AA), orchiectomy, or gonadotropin-releasing hormone (GnRH) agonists compared to an age-matched, PCa-free comparison cohort (n=167,205) using multivariate Cox proportional hazard regression. T2DM was defined as a newly filled prescription for metformin, sulphonylurea, or insulin in the Prescribed Drug Register. A total of 21,874 men with PCa received GnRH agonists, 9,143 AA and 3,014 underwent orchiectomy. Risk of T2DM was increased in men in the GnRH agonists/orchiectomy group during the first 3 years of ADT [i.e., 121.5 years HR: 1.61 (95% CI: 1.36-1.91)], compared to PCa-free men. The risk decreased thereafter (e.g., 324 years HR: 1.17 (95% CI: 0.98-1.40)). Conversely, no increased risk was seen in men on AA (HR: 0.74 (95% CI: 0.65-0.84). The incidence of T2DM per 1,000 person-years was 10 for PCa-free men, 8 for men on AA, and 13 for men on GnRH agonists/orchiectomy. Duration of ADT has a significant impact on risk of T2DM. With the peak after three years of treatment, our data indicates that men on ADT, even for a limited period of time, such as adjuvant to radiotherapy, are at increased risk of T2DM.
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60.
  • Crawley, Danielle, et al. (författare)
  • Association between type 2 diabetes, curative treatment and survival in men with intermediate- and high-risk localized prostate cancer.
  • 2018
  • Ingår i: BJU International. - : Wiley. - 1464-4096 .- 1464-410X. ; 121:2, s. 209-216
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To investigate whether curative prostate cancer (PCa) treatment was received less often by men with both PCa and Type 2 diabetes mellitus (T2DM) as little is known about the influence of T2DM diagnosis on the receipt of such treatment in men with localized PCa.SUBJECTS AND METHODS: The Prostate Cancer database Sweden (PCBaSe) was used to obtain data on men with T2DM and PCa (n = 2210) for comparison with data on men with PCa only (n = 23 071). All men had intermediate- (T1-2, Gleason score 7 and/or prostate-specific antigen [PSA] 10-20 ng/mL) or high-risk (T3 and/or Gleason score 8-10 and/or PSA 20-50 ng/mL) localized PCa diagnosed between 1 January 2006 and 31 December 2014. Multivariate logistic regression was used to calculate the odds ratios (ORs) for receipt of curative treatment in men with and without T2DM. Overall survival, for up to 8 years of follow-up, was calculated both for men with T2DM only and for men with T2DM and PCa.RESULTS: Men with T2DM were less likely to receive curative treatment for PCa than men without T2DM (OR 0.78, 95% confidence interval 0.69-0.87). The 8-year overall survival rates were 79% and 33% for men with T2DM and high-risk PCa who did and did not receive curative treatment, respectively.CONCLUSIONS: Men with T2DM were less likely to receive curative treatment for localized intermediate- and high-risk PCa. Men with T2DM and high-risk PCa who received curative treatment had substantially higher survival times than those who did not. Some of the survival differences represent a selection bias, whereby the healthiest patients received curative treatment. Clinicians should interpret this data carefully and ensure that individual patients with T2DM and PCa are not under- nor overtreated.
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