Is unilateral oophorectomy associated with age at menopause? Women who had undergone entered menopause 1 year earlier than women two ovaries intact. There is substantial variation in natural menopause. Unilateral implies a significant reduction of the ovarian follicular reserve. Thus, one might expect that time to shortened by several years have oophorectomy. A retrospective cohort study 23 580 Norwegian were included population-based HUNT2 Survey during 1995–1997. Data obtained...

Objective To study the prognosis for pelvic girdle pain, and to explore association between presence of emotional distress during pregnancy syndrome 6 months after delivery. Design Longitudinal population study. Setting Norway, period 1999–2008. Population A follow‐up 41 421 women in Norwegian Mother Child Cohort who reported pain at 30 weeks gestation. Methods Data were obtained by self‐administered questionnaires 17 gestation, Main outcome measure Pelvic delivery, defined as anterior...

Abstract STUDY QUESTION Have mean age at menarche or natural menopause changed from the 1939 birth cohort to 1964 cohort? SUMMARY ANSWER We estimated a minor decrease in and an increase by nearly 3 years menopause. WHAT IS KNOWN ALREADY In Western world, decreased across cohorts early 1800s until 1950s. Whether has continued after 1950s remains uncertain. It is also uncertain whether cohorts. DESIGN, SIZE, DURATION performed retrospective population study of 312 656 women who were born...

Is age at menarche associated with menopause or duration of the reproductive period (interval between and menopause)?The association was weak non-linear, decreased by increasing menarche.It remains uncertain whether is menopause. Some studies report that women early also have Other late menopause, they no association. The may be an indicator cumulative endogenous exposure to estrogens progestogens during life course risk breast cancer endometrial cancer.A retrospective cohort study 336 788...

To compare pregnancy complications and birth outcomes for women experiencing nausea vomiting in pregnancy, or only, with symptom-free women. Pregnancies from the Norwegian Mother Child Cohort Study (n = 51 675), a population-based prospective cohort study, were examined. Data on and/or during gestation collected three questionnaires answered between weeks 15 30, linked data Medical Birth Registry of Norway. Chi-squared tests, one way analysis variance, multiple linear logistic regression...

We studied associations of number daily cigarettes in the first trimester with placental weight and birthweight women who smoked throughout pregnancy, stopped smoking after trimester. included all delivery a singleton Norway (n = 698 891) during 1999–2014, by using data from Medical Birth Registry Norway. assessed dose-response applying linear regression restricted cubic splines. In total, 12.6% trimester, 3.7% smoking. decreased cigarettes; however, above 11–12 we estimated no further...

Comparisons across studies of generalized joint hypermobility are often difficult since there several classification methods and methodological differences in the performance exist. The Beighton score is most commonly used has been tested for inter- intra-rater reliability. Contompasis Hospital del Mar criteria have not yet evaluated aim this study was to investigate reliability measurements range motion joints included these three assessment using a structured protocol.The planned...

Please cite this paper as: Bjelland E, Eberhard-Gran M, Nielsen C, Eskild A. Age at menarche and pelvic girdle syndrome in pregnancy: a population study of 74 973 women. BJOG 2011;118:1646–1652. Objective To the association age with presence pregnancy. Design Population study. Setting Norway 1999–2007. A total pregnant women Norwegian Mother Child Cohort Study. Methods Data were obtained by self-administered questionnaires weeks 17 30 gestation. Main outcome measure Pelvic pregnancy...

Objective To examine whether an association exists between exercise levels pre-pregnancy and pelvic girdle pain in pregnancy. Pelvic pregnancy has been associated with physical inactivity, a risk factor for adverse outcomes. Methods We used data from population-based cohort study including 39 184 nulliparous women singleton enrolled the Norwegian Mother Child Cohort study. Pre-pregnancy frequency types were assessed by questionnaire week 17. pain, defined as combined anterior pelvis...

In this longitudinal population study, the aims were to study associations of mode delivery with new onset pelvic pain and changes in scores up 7 18 months after childbirth. We included 20,248 participants enrolled Norwegian Mother Child Cohort Study (1999-2008) without preexisting pregnancy. Data obtained by 4 self-administered questionnaires linked Medical Birth Registry Norway. A total 4.5% women reported 0 3 postpartum. Compared unassisted vaginal delivery, operative was associated...

Abstract Background Previous studies suggest that birthweight may influence age at natural menopause, but the evidence remains inconclusive. Thus, we aimed to estimate association of with menopause. Methods A retrospective population study 164 608 women in Norway, aged 48–71 years. Data were obtained by two self-administered questionnaires among participants BreastScreen Norway during 2006–2014. We used Cox proportional hazard models ratios and logistic regression odds menopause according...

In 1988, Norway established a countrywide, physician staffed helicopter emergency medical service (HEMS). The benefit remains controversial. aim of this study was to estimate the population incidence HEMS involvement in out-of-hospital cardiac arrest, report patient outcome and evaluate contribution survival.We studied operations central (population 364,000) during 10-year period (1988-1997). Missions were classified according type quality intervention done by primary care providers....

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Objective To study if childhood emotional, physical and sexual abuse are determinants for having an unplanned pregnancy, the categories of interact, a potential bias due to selection participants (collider stratification bias) could explain effect abuse. Design A cross‐sectional study. Setting The is based on Norwegian Mother Child Cohort Study (MoBa) uses data from Medical Birth Registry Norway. Sample Women participating in MoBa first time, ≥18 years age who responded questions regarding...

Abstract Background Pelvic girdle pain (PGP) is common during pregnancy but the causes remain poorly understood. Generalized joint hypermobility (GJH) an inherited trait, with mobility beyond normal limits and assumed to be related PGP. The aim of this project was study association between self-reported GJH presence PGP pregnancy. Methods In cohort study, 4884 Swedish-speaking women were consecutively recruited at their first visit for registration in national antenatal screening programme...

Objective To study the associations of patterns and duration breastfeeding with persistence pelvic girdle pain 18 months after delivery. Design Longitudinal population study. Setting Norway, for period 1999–2011. Population A follow‐up 10 603 women singleton deliveries in Norwegian Mother Child Cohort Study who reported at 0–3 postpartum. Methods Data were obtained by four self‐administered questionnaires linked to Medical Birth Registry Norway. Main outcome measure Pelvic pain, defined as...

STUDY QUESTIONIs pre-pregnancy hormonal contraception use associated with the development of pelvic girdle pain during pregnancy?

Does age at natural menopause increase with increasing of number childbirths?