Sex differences in non-communicable disease prevalence in China: a cross-sectional analysis of the China Health and Retirement Longitudinal Study in 2011

Yan Liu, Guofeng Liu, Hongjiang Wu, Weiyan Jian, Sarah Wild, Danijela Gasevic

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives To describe the sex differences in the prevalence of non-communicable diseases (NCDs) in adults aged 45 years or older in China.
Design Cross-sectional study.
Setting Nationally representative sample of the Chinese population 2011.
Participants 8401 men and 8928 women over 44 years of age who participated in the first wave of the China Health and Retirement Longitudinal Study (CHARLS)
Outcome measures Self-reported data on overall health and diagnosis of hypertension, dyslipidaemia, diabetes, heart disease, stroke, chronic lung disease, cancer or arthritis. Sex differences in NCDs were described using logistic regression to generate odds ratios (OR) with adjustment for socio-demographic factors and health-related behaviours. All analyses were stratified by age group for 45-64 and 65+ year old participants.
Results In both age groups, men reported better overall health compared to women. The crude prevalence of heart disease, cancer and arthritis was higher; while that of stroke and chronic lung disease was lower in women than in men. After adjustment, OR (95%CI) for the 45-64 and 65+ year age groups respectively were 0.70 (0.58 - 0.84) and 0.66 (0.54 - 0.80) for arthritis for men compared to women. In contrast, OR were 1.66 (1.09 - 2.52) and 2.12 (1.36 - 3.30) for stroke and 1.51 (1.21 - 1.89) and 1.43 (1.09 - 1.88) for chronic lung disease for men compared to women. Odds of heart disease (0.65 (0.52-0.80)) were lower in men compared to women only in the 45-64 year age group.
Conclusions Odds of arthritis were lower while those of stroke and chronic lung disease were higher in men than in women in both age groups. However, odds of heart disease were lower in men than in women, but only in the group of individuals aged 45 to 64 years.
Original languageEnglish
JournalBMJ Open
DOIs
Publication statusPublished - 14 Dec 2017

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