OBJECTIVE To investigate the association of paternal age at conception with the risk of offspring developing schizophrenia. DESIGN A population based cohort study. SETTING Sweden. SUBJECTS 754,330 people born in Sweden between 1973 and 1980 and still alive and resident in Sweden at age 16 years. MAIN OUTCOME MEASURES Hospital admission with schizophrenia or non-schizophrenic, non-affect...

There is currently no quantitative tool for measuring paternal involvement in childcare and housework. To address this, we run Confirmatory Factor Analysis (CFA) on a sample of households from the 2001-02 sweep of the UK’s Millennium Cohort Study. Two quantitative measures of paternal involvement in childcare and housework are derived for when the child is aged nine months old, which appear to ...

BACKGROUND Many human epidemiologic studies demonstrate that maternal asthma confers greater risk of asthma to offspring than does paternal disease. However, a handful have shown the opposite. Given this disparity, a meta-analysis is necessary to determine the veracity and magnitude of the "maternal effect." METHODOLOGY/PRINCIPAL FINDINGS We screened the medical literature from 1966 to 2009 a...

Little is known on environmental risk factors for cryptorchidism and hypospadias, which are among the most frequent congenital abnormalities. The aim of our study was to identify risk factors for cryptorchidism and hypospadias, with a focus on potential endocrine disruptors in parental diet and occupation. In a case-control study nested within a cohort of 8,698 male births, we compared 78 crypt...

Given the documented association between paternal alcoholism and negative parenting behaviors, the purpose of this study was to examine longitudinally whether marital satisfaction mediates this relationship. Participants consisted of 197 families (102 without an alcoholic father, 95 with an alcoholic father) who were assessed at three time points: when children were 12, 24, and 36 months old. R...

background primary maladaptive schemas, which are the basis of high-risk behavior and psychological disorders, result from childhood experiences with significant objects, such as fathers, in different developmental phases. objectives this endeavor examined the role of the father in predicting these schemas. patients and methods a total of 345 islamic azad university students (qom branch) who we...

BACKGROUND Most previous studies on the effect of paternal age have focused on the association of advanced paternal age with congenital anomalies. The objective of this study was to determine whether paternal age is associated with the risk of adverse birth outcomes, independent of maternal confounders. METHODS We carried out a retrospective cohort study of 2 614 966 live singletons born to m...

Exposure to environmental tobacco smoke (ETS) is an important modifiable risk factor for child hospitalization, although its contribution is not well documented in countries where ETS due to maternal tobacco smoking is negligible. We conducted a birth cohort study of 1999 neonates between May 2009 and May 2010 in Nha Trang, Vietnam, to evaluate paternal tobacco smoking as a risk factor for infe...