Spousal Concordance of Cardiovascular Risk Factors in Newly Married Couples in China
JAMA NETWORK OPEN(2021)
Abstract
IMPORTANCE Several studies have shown that older married couples share a propensity for accruing the same cardiovascular risk factors such as hypertension and dyslipidemia. However, it remains unclear if these spousal associations reflect their shared home environment and lifestyle or the tendency to choose a partner with a similar perspective on lifestyle choices and behaviors (assortative mating). Evaluating these associations in young, newly married couplesmay help to differentiate between these 2 possibilities. OBJECTIVE To evaluate the spousal concordance of cardiovascular risk factors in young, newly married couples. DESIGN, SETTING, AND PARTICIPANTS This prospective cohort study recruited 831 couples around the time of marriage registration in Liuyang, China, from February 1, 2009, to November 4, 2015. Statistical analysis was performed from April to May 2021. MAIN OUTCOMES AND MEASURES Spousal concordance of cardiovascular risk factors. Both partners underwent systematic assessment of cardiovascular risk factors, including evaluation of anthropometrics, blood pressure, and fasting lipids. RESULTS Among the 831 participating couples, mean (SD) age was 24 (3) years in the women and 26 (4) years in the men. There were significant correlations between spouses in systolic blood pressure (r = 0.43; P <.001), diastolic blood pressure (r = 0.36; P <.001), total cholesterol (r = 0.13; P <.001), low-density lipoprotein cholesterol (r = 0.11; P =.003), high-density lipoprotein (HDL) cholesterol (r = 0.22, P <.001), and triglycerides (r = 0.13; P =.001). After adjustment for covariates (age, household income, education level, smoking, and either body mass index or waist circumference), significant correlations persisted between spouses in their systolic blood pressure (r = 0.42; P <.001), diastolic blood pressure (r = 0.34; P <.001), HDL cholesterol (r = 0.17; P <.001), and triglycerides (r = 0.10; P =.04). CONCLUSIONS AND RELEVANCE This cohort study found spousal concordance of cardiovascular risk factors among young newly married couples. Assortative mating based on these concordant risk factors at the time of marriage may partially explain the shared vascular risk profile of older marital partners and raises the possibility of couple-based care.
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Key words
cardiovascular risk factors,couples,risk factors
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