A1 Refereed original research article in a scientific journal
Secular trend in the menopausal age in Finland 1997-2007 and correlation with socioeconomic, reproductive and lifestyle factors
Authors: Pakarinen M, Raitanen J, Kaaja R, Luoto R
Publication year: 2010
Journal: Maturitas
Journal name in source: Maturitas
Journal acronym: Maturitas
Volume: 66
Issue: 4
First page : 417
Last page: 22
Number of pages: 6
ISSN: 0378-5122
eISSN: 1873-4111
DOI: https://doi.org/10.1016/j.maturitas.2010.04.005
Abstract
Only few studies have studied secular trend of menopausal age during last decade. The aim of our study is to analyze secular trend of menopausal age and to evaluate the role of socioeconomic, reproductive and lifestyle factors.\nNational FINRISK Study sample from years 1997 and 2007 was utilized. The sample size for 1997 was 4193 and during 2007 was 4253 women. Covariance analysis included menopausal age as dependent variable and covariates (age, study year, education, occupation, parity, age at first birth, smoking, use of alcohol, physical activity, body mass index, waist circumference and waist-hip ratio) as independent variables.\nMedian of menopausal age was 50 years in 1997 and 51 years in 2007. Differences in menopausal age by covariate were largest in smoking, education and occupation. Difference in mean menopausal age between smokers and non-smokers was larger in 2007 than in 1997 (p<0.001). Lowest educated women had lower average menopausal age during 2007 than higher educated women (p<0.001), but not in 1997. When including sociodemographic, reproductive and lifestyle factors in a model, smoking was significantly related to earlier and physical activity to later menopausal age. Study year was not significant in any model.\nEducation, smoking and physical activity have an important role in menopausal age determination when comparing 10-year differences in menopausal age.\nBACKGROUND AND AIMS\nMATERIAL AND METHODS\nRESULTS\nCONCLUSION
Only few studies have studied secular trend of menopausal age during last decade. The aim of our study is to analyze secular trend of menopausal age and to evaluate the role of socioeconomic, reproductive and lifestyle factors.\nNational FINRISK Study sample from years 1997 and 2007 was utilized. The sample size for 1997 was 4193 and during 2007 was 4253 women. Covariance analysis included menopausal age as dependent variable and covariates (age, study year, education, occupation, parity, age at first birth, smoking, use of alcohol, physical activity, body mass index, waist circumference and waist-hip ratio) as independent variables.\nMedian of menopausal age was 50 years in 1997 and 51 years in 2007. Differences in menopausal age by covariate were largest in smoking, education and occupation. Difference in mean menopausal age between smokers and non-smokers was larger in 2007 than in 1997 (p<0.001). Lowest educated women had lower average menopausal age during 2007 than higher educated women (p<0.001), but not in 1997. When including sociodemographic, reproductive and lifestyle factors in a model, smoking was significantly related to earlier and physical activity to later menopausal age. Study year was not significant in any model.\nEducation, smoking and physical activity have an important role in menopausal age determination when comparing 10-year differences in menopausal age.\nBACKGROUND AND AIMS\nMATERIAL AND METHODS\nRESULTS\nCONCLUSION
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