Association of depressive symptoms with non-fatal cardiovascular disease in middle-aged and elderly patients with hypertension: a cohort study from China.

Abstract

Our study explored the association between depressive symptoms and non-fatal cardiovascular disease, as well as other significant risk factors for non-fatal cardiovascular disease, in middle-aged and elderly patients with hypertension in China. Prospective cohort study. Data were sourced from the China Health and Retirement Longitudinal Study (CHARLS) database over a 9-year period (2011-2020). Middle-aged and elderly patients with hypertension aged 45 and above in China. Non-fatal cardiovascular disease was ascertained based on self-reported, physician-diagnosed heart disease. Depressive symptoms were measured using the Center for Epidemiologic Studies Depression Scale-10. A total of 1755 participants were enrolled in the prospective cohort study. The incidence of non-fatal cardiovascular diseases among patients with hypertension was 5 per 1000 person-months. There was a positive linear correlation between depressive symptoms and the risk of non-fatal cardiovascular diseases (p_non-linear=0.625). Meanwhile, an inverted U-shaped relationship was identified between baseline duration of hypertension and risk of non-fatal cardiovascular diseases; those experiencing hypertension for 15 years had the highest risk, with the risk decreasing for durations above or below this value (p_non-linear <0.001). Other risk factors identified were female gender (HR 1.19, 95% CI 1.01 to 1.40), health education (HR 0.81, 95% CI 0.70 to 0.95), comorbidity of diabetes (HR 1.60, 95% CI 1.30 to 1.97) and age (HR 1.01, 95% CI 1.01 to 1.02). This study demonstrates graded associations between depression severity and incident non-fatal cardiovascular disease in middle-aged and elderly patients with hypertension in China. The multivariable analysis identified five modifiable risk determinants: inadequate health education, advanced age, female gender, diabetes comorbidity and hypertension exposure duration of 7-21 years. These findings necessitate precision prevention strategies combining psychocardiological interventions with risk factor modification in high-risk subgroups.