نتایج جستجو برای: cohort study
تعداد نتایج: 4030161 فیلتر نتایج به سال:
Background and Objectives: The aim of this study was to compare the intrinsic estimator method and the age, period and cohort accounting model used for identifying age, period, and cohort trends in incidence, prevalence, and mortality rates. Methods: The data of 2 studies " Age, Period, and Cohort Effects on Alcohol and Drug use Among Students of Tehran University of Medical Sciences from 2006...
This paper investigates the association between family poverty, the level of deprivation in electoral wards and children's cognitive test scores using data from the second generation in the 1991 sweep of the British National Child Development Study (1958 birth cohort). Family poverty has a significant association with lower test scores in children of all ages (4-18 years). Neighbourhood poverty...
OBJECTIVES To assess inconsistencies in reported age at first sex (AFS) and age at first marriage (AFM) in three African cohorts, and consider their implications for interpreting trends in sexual and marital debut. METHODS Data were analysed from population-based cohort studies in Zimbabwe, Uganda and South Africa with 3, 10 and 4 behavioural survey rounds, respectively. Three rounds over a s...
The Geelong Osteoporosis Study (GOS) began as a population-based study designed to investigate the epidemiology of osteoporosis in Australia. Osteoporosis is a systemic skeletal disease characterized by low bone mineral density (BMD) and micro-architectural deterioration of bone tissue, with a consequent increase in susceptibility to fracture. Fragility fractures at the spine, hip, wrist and ot...
1234 be related to low birth weight in these men and women, and to low weight at 1 year among the men.3 This was the first study based on individual (rather than ecological) level data to demonstrate such relationships. Having studied mortality, the next stage was to explore the relationship between the early environment and a range of morbidity outcomes in surviving members of the cohort. Deta...
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