Influence of parity-related factors adjusted for abortion on @entity626 in Korean XXXX aged 50 or older: A cross-sectional study.

@entity1 @entity626 @entity571
OBJECTIVES: @entity626 ( @entity571 ) is pervasive in aged populations, and induces considerable socioeconomic expense. The objective of this study was to investigate the association between @entity571 prevalence and pregnancy and parity in Koreans, considering for the potential effect of abortion. STUDY DESIGN: A total 5449 @entity1 aged >= 50 years with radiological knee examination results of 24,173 @entity1 of the 5th Korean National Health and Nutrition Examination Survey (2010-2012) were analyzed in a cross-sectional study. MAIN OUTCOME MEASURES: Association between @entity571 prevalence (Kellgren/Lawrence grade) and pregnancy and parity as odds ratios (ORs) by logistic regression. RESULTS: Knee @entity571 results were normal in 1996 @entity1 (36.1%), suspected in 1012 (18.6%), mild in 781 (14.3%), moderate in 1073 (19.7%), and severe in 617 (11.3%). Increase in number of pregnancies adjusted for abortion was significantly associated with increased @entity571 prevalence (OR 1.081; 95% CI 1.015, 1.152). @entity571 prevalence increased with parity (continuous variable) in ever-abortion (OR 1.092; 95% CI 1.009, 1.181) and with parity (categorical variable) with reference value set at 1-2 (P for trend; p=0.0195). In analyses adjusted for abortion, ever-abortion negatively influenced @entity571 prevalence. Parity was not associated with @entity571 in number of pregnancies unadjusted for abortion or in never-abortion @entity1 . CONCLUSIONS: This study shows that maternity-related factors such as pregnancy and parity were related with knee @entity571 prevalence in this population-based sample of older @entity1 , and that relationships with abortion were stronger.
