Long-term trends in sunshine duration and its association with schizophrenia birth rates and age at first registration--data from Australia and the Netherlands.

نویسندگان

  • John McGrath
  • Jean-Paul Selten
  • David Chant
چکیده

BACKGROUND Based on the well-described excess of schizophrenia births in winter and spring, we hypothesised that individuals with schizophrenia (a) would be more likely to be born during periods of decreased perinatal sunshine, and (b) those born during periods of less sunshine would have an earlier age of first registration. METHODS We undertook an ecological analysis of long-term trends in perinatal sunshine duration and schizophrenia birth rates based on two mental health registers (Queensland, Australia n=6630; The Netherlands n=24,474). For each of the 480 months between 1931 and 1970, the agreement between slopes of the trends in psychosis and long-term sunshine duration series were assessed. Age at first registration was assessed by quartiles of long-term trends in perinatal sunshine duration. Males and females were assessed separately. RESULTS Both the Dutch and Australian data showed a statistically significant association between falling long-term trends in sunshine duration around the time of birth and rising schizophrenia birth rates for males only. In both the Dutch and Australian data there were significant associations between earlier age of first registration and reduced long-term trends in sunshine duration around the time of birth for both males and females. CONCLUSIONS A measure of long-term trends in perinatal sunshine duration was associated with two epidemiological features of schizophrenia in two separate data sets. Exposures related to sunshine duration warrant further consideration in schizophrenia research.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

In Vitro Maturation of Oocytes in Women at Risk of Ovarian Hyperstimulation Syndrome-A Prospective Multicenter Cohort Study

Objective In vitro maturation (IVM) is an artificial reproductive technology in which immature oocytes are harvested from the ovaries and subsequently matured in vitro. IVM does not require ovarian hyperstimulation and thus the risk of ovarian hyperstimulation syndrome (OHSS) is avoided. In this multicenter prospective cohort study we assessed the live birth rate per initiated in vitro maturati...

متن کامل

The Relative Age Effect of Elite Taekwondo Athletes

Background. It is because athletes’ physique, physical strength and experience are vital in sports. Objectives. This study was conducted to confirm the relative age effect in Taekwondo, which is an important factor in sports. Methods. Data on the date of birth of 12,054 Taekwondo athletes registered in the Korean Sports Association and data on the date of birth of 11,034,421 public data by th...

متن کامل

Determinants of Age at Natural Menopause in Shiraz

The mean age at natural menopause and its determinants among Shirazi women (southern Iran) was calculated.  The data were obtained from a population- based cross-sectional study carried out in the year 2000.  Interviews were carried out and observations made on 948 women who had incurred natural menopause. They were randomly chosen using postal zones housing sample framework of Shiraz.Mean±SD a...

متن کامل

The Prevalence of Limited Joint Mobility in Patients with Type I Diabetes Mellitus in Kerman

Background & Aims: Limited joint mobility (LJM) is a complication of diabetes mellitus, which usually begins from the small joints of hands and is associated with long-term complications of diabetes, such as retinopathy and nephropathy. The aim of this study was to find the prevalence of Limited Joint Mobility in patients with type 1 diabetes mellitus in Kerman in 2003. Methods: Sixty-six patie...

متن کامل

روند و تعیین‌کننده‌های شاخص مرگ و میر کودکان زیر یک سال استان فارس طی سال‌های 1380 تا 1390

Background and Objective: Infant mortality rate (IMR) is one of the most important sensitive indicators of the socio economic and health status of a community. The aim of this study is to investigate the infant mortality rate (IMR) during 2001-2011 in Fars province and study socio economic factors that influence IMR. Materials and Method: This is a quantitative study. Data was gathere...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Schizophrenia research

دوره 54 3  شماره 

صفحات  -

تاریخ انتشار 2002