abstract：BACKGROUND:Case-control studies are a common and efficient means of studying rare diseases or illnesses with long latency periods. Matching of cases and controls is frequently employed to control the effects of known potential confounding variables. The analysis of matched data requires specific statistical methods. M...

journal_title：Clinical epidemiology

authors： Niven DJ,Berthiaume LR,Fick GH,Laupland KB

更新日期：2012-01-01 00:00:00

abstract：BACKGROUND:To date there has not been any nationwide age-standardized incidence data reported for prostate cancer in Nigeria. We examined and integrated diverse trends in the age-specific incidence of prostate cancer into a comprehensive trend for Nigeria, and examined how best the existing data could generate a countr...

journal_title：Clinical epidemiology

authors： Ifere GO,Abebe F,Ananaba GA

更新日期：2012-01-01 00:00:00

abstract：BACKGROUND:Primary hyperparathyroidism (pHPT) is associated with an increased risk of developing breast cancer, but little is known about the underlying factors. The aim of this study was to compare women with a history of pHPT and a reference population in terms of standard factors predictive of prognosis and response...

journal_title：Clinical epidemiology

authors： Norenstedt S,Granath F,Ekbom A,Bergh J,Lambe M,Adolfsson J,Warnberg F,Zedenius J,Nilsson IL

更新日期：2011-03-25 00:00:00

abstract：OBJECTIVE:Invasive bladder cancer (IBC) is a common urological malignancy accounting for 4%-5% of all cancers in Denmark. Our aim was to examine possible changes in short- and long-term survival of patients with IBC during 1998-2009. STUDY DESIGN AND SETTING:Data on all patients (N = 4032) with an incident diagnosis o...

journal_title：Clinical epidemiology

authors： Lund L,Erichsen R,Nørgaard M,Larsen EH,Borre M,Jacobsen J

更新日期：2011-01-01 00:00:00

abstract：BACKGROUND:Physical activity (PA) and its relationship with all-cause mortality suggest a strong and consistent inverse association. This study prospectively investigated the association between PA level and mortality among participants of the Norwegian Women and Cancer (NOWAC) Study. METHODS:A total of 66,136 NOWAC p...

journal_title：Clinical epidemiology

authors： Borch KB,Braaten T,Lund E,Weiderpass E

更新日期：2011-01-01 00:00:00

abstract：OBJECTIVES:Translational epidemiology studies often use archived tumor specimens to evaluate genetic hypotheses involving cancer outcomes. When the exposure of interest is a germline polymorphism, a key concern is whether the genotype assayed from tumor-derived DNA is representative of the germline. We evaluated the co...

journal_title：Clinical epidemiology

authors： Ahern TP,Christensen M,Cronin-Fenton DP,Lunetta KL,Rosenberg CL,Sørensen HT,Lash TL,Hamilton-Dutoit S

更新日期：2010-10-22 00:00:00

abstract：BACKGROUND:Data on the safety of selective serotonin-reuptake inhibitors (SSRIs) in pregnancy are inconsistent. We examined associations between SSRI use during early pregnancy and risk of congenital malformations in infants. METHODS:Set in Northern Denmark, our population-based prevalence study included 216,042 women...

journal_title：Clinical epidemiology

authors： Kornum JB,Nielsen RB,Pedersen L,Mortensen PB,Nørgaard M

更新日期：2010-08-09 00:00:00

abstract：OBJECTIVE:To validate a clinical database for nonmelanoma skin cancer (NMSC) with the aim of monitoring and predicting the prognosis of NMSC treated by dermatologists in clinics in the central and north Denmark regions. METHODS:We assessed the completeness of registration of patients and follow-up visits, and positive...

journal_title：Clinical epidemiology

authors： Lamberg AL,Cronin-Fenton D,Olesen AB

更新日期：2010-08-09 00:00:00

abstract：BACKGROUND:Administrative data may be useful for epidemiological studies of chronic idiopathic thrombocytopenic purpura (ITP). However, the quality of the recorded diagnoses needs evaluation. AIM:We evaluated the validity in predicting chronic ITP of the International Classification of Diseases (ICD)-10 diagnoses of I...

journal_title：Clinical epidemiology

authors： Heden KE,Jensen AØ,Farkas DK,Nørgaard M

更新日期：2009-08-09 00:00:00

abstract：BACKGROUND:Comorbidity indices summarize complex medical histories into concise ordinal scales, facilitating stratification and regression in epidemiologic analyses. Low subject prevalence in the highest strata of a comorbidity index often prompts combination of upper categories into a single stratum ('collapsing'). O...

journal_title：Clinical epidemiology

authors： Ahern TP,Bosco JL,Silliman RA,Yood MU,Field TS,Wei F,Lash TL

更新日期：2009-08-09 00:00:00