This article examines the development of the educational and vocational careers of 1257 subjects born between 1961 and 1969 as a function of economic circumstances in the Netherlands during the eighties. Subjects were expected to attend school longer in times of recession, to have a higher level of education, while getting a suitable, high-quality job (in terms of number of hours, appointment t...

in many area of medical research, a relation analysis between one response variable and some explanatory variables is desirable. regression is the most common tool in this situation. if we have some assumptions for such normality for response variable, we could use it. in this paper we propose a nonparametric regression that does not have normality assumption for response variable and we focus ...

background: data on premature coronary artery disease (cad) are scarce. the tehran heart center's premature coronary atherosclerosis cohort study (thc-pac) is the first study of its kind in the middle east to assess major adverse cardiac events (mace) in young cad patients. methods: the cohort consists of cad patients, males ≤ 45 years old and females ≤ 55 years old. the participants are reside...

background : this study aimed to investigate the association of seven common inflammatory diseases with type 2 diabetes (t2d) in the chinese mainland population. methods : participants were recruited from a great swathe of mainland from 2009 to 2013 for the cohort study. the demographic characteristics between patients with t2d or with inflammatory diseases, including age, sex, smoking status, ...

background : the association of the mobile phone use and risk of brain tumor remains controversial among radiationepidemiologists. methods : we hypothesized if an association between brain tumor and mobile phone use exists, this association will be manifested as a cohort effect (as a proxy of association between mobile phone use and brain tumor) in the incidence rates of brain tumor during the ...

BACKGROUND The relationship between socioeconomic status (SES) and breastfeeding has been extensively discussed in the literature. However, there is some evidence that this relationship can differ with immigration status. To date the majority of research investigating the relationships among SES, breastfeeding and immigration status has been conducted in Europe and the United States with a lack...

BACKGROUND Three longitudinal studies of cancer incidence in varied populations of World Trade Center responders have been conducted. METHODS We compared the design and results of the three studies. RESULTS Separate analyses of these cohorts revealed excess cancer incidence in responders for all cancers combined and for cancers of the thyroid and prostate. Methodological dissimilarities inc...

BACKGROUND Studies of the effects of maternal smoking during pregnancy have reported inconsistent findings in relation to measures of offspring cognitive functioning. Few studies, however, have examined learning outcomes in adolescents, as opposed to IQ. AIM To examine the association between maternal smoking during pregnancy and academic performance among adolescent offspring. STUDY DESIGN...

Gemini is a cohort study of young twins in the United Kingdom designed to assess genetic and environmental influences on early childhood weight trajectories with a focus on infant appetite and the family environment. A total of 2402 families with twins born in England and Wales between March and December 2007 agreed to participate and returned completed baseline questionnaires. The sample inclu...