نتایج جستجو برای: cohort
تعداد نتایج: 217733 فیلتر نتایج به سال:
BACKGROUND Food preferences vary substantially among adults and children. Twin studies have established that genes and aspects of the shared family environment both play important roles in shaping children's food preferences. The transition from childhood to adulthood is characterized by large gains in independence, but the relative influences of genes and the environment on food preferences in...
The strong differences in manifestation, prevalence, and incidence in dyslexia across languages invite studies in specific writing systems. In particular, the question of the role played by emergent literacy in opaque and transparent writing systems remains a fraught one. This research project tested, through a 4-year prospective cohort study, an emergent literacy model for the analysis of the ...
تاکنون مطالعات و تحقیقاتی مقطعی در زمینه پوسیدگی دندانی در افراد دیابتیک و سالم انجام شده در مورد میزان پوسیدگی دندان درافراد دیابتیک و سالم بین محققین این رشته اختلاف عقیده و نظر وجود دارد. بنابراین با وجود این اختلافات عقیده در زمینه رابطه دیابت و پوسیدگی و یا به عبارت دیگر رابطه دیابت با شاخص dmfدر سال 1380پژوهشی با هدف بررسی رابطه دیابت کنترل شده و شاخصdmfدر بیماران دیابتیک تحت پوشش...
Background & Objectives: The case-cohort study is one of the youngest designs in epidemiology and some methodological aspects of it are still in debate. This study aimed at comparing the estimated hazard ratio, standard error, and interaction hazard ratio between the case-cohort and cohort studies for assessing the relationship between diabetes and cardiovascular diseases.Methods: A total of 17...
Background and Objectives: Suicide is one of the psychosocial problems in Lorestan Province due to its socio-cultural and economic structure. The aim of this study was to investigate the effect of age group, time period, and birth cohort on the suicide incidence in Lorestan Province during the 2006-2015. Methods: In this study, to overcome the identifiability problem, the Carstensen approac...
background pancreatic cancer (pc) is classified as one of the most deadly cancers. since the role of diet in modifying the effects of known risk factors of pc has been well established, exploring the dietary intakes in relation to the etiology of pc can be useful for elucidating the mechanisms of the disease progression. methods and materials this study was conducted within the golestan prospec...
conclusions the prevalence of predominant breastfeeding during the first month postpartum is high in shahroud. interventions to strengthen adherence to who guidelines for breastfeeding should be considered. breastfeeding education providers at the hospitals should emphasize the effects of formula on breastfeeding continuation at early postpartum. background the introduction of fluids to infants...
anxiety may negatively affect the course of coronary artery disease (cad). the aim of this study was to assess which factors are associated with anxiety in young adults with cad. a cohort of individuals with premature coronary artery disease was formed between 2004-2011, as the tehran heart center's premature coronary atherosclerosis cohort (thc-pac) study. patients (men≤45-year-old, and women≤...
conclusions due to the scarcity of studies related to some dairy subgroups, it is not possible to make a final judgment about their effects on the risk of diabetes; therefore, more studies need to be conducted on this issue. results out of 1391 articles, 13 (covering 421,421 people) were introduced to the current meta-analysis. the findings showed that the consumption of yoghurt and cream has p...
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...
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