Key result
Anxiety is linked to ~88% higher odds of poor sleep quality in coronary heart disease.
Why the study?
Poor sleep quality is an increasingly recognized modifiable cardiovascular risk factor, but data among patients with established coronary heart disease in Central Asia are scarce.
Cross-Sectional (n=398)
Yes
Odds Ratio: 1.88 (95% CI 1.1–3.23)
p-value: p=0.021
Over a third of patients with established coronary heart disease experience poor sleep quality, which is independently driven by anxiety, highlighting the need for integrated psychological and sleep screening in secondary prevention.
Anxiety screening may merit consideration in CHD secondary prevention; leaves open whether anxiety treatment improves sleep in prospective trials.
Background: Poor sleep quality is an increasingly recognized, modifiable cardiovascular risk factor, yet data among patients with established coronary heart disease (CHD) in Central Asia are scarce. We estimated the prevalence of poor sleep quality and identified its correlates in a Kazakhstani CHD population. Methods: In this multi-center cross-sectional study, 398 patients 6–24 months after an index coronary event were assessed for sleep quality. Sleep quality was measured with the Pittsburgh Sleep Quality Index (PSQI; >5 = poor). Anxiety and depression, physical activity, cognition, and clinical and socio-demographic variables were recorded. Associations were examined using logistic regression with subgroup and interaction analyses. Results: Poor sleep quality was reported by 147 patients (36.9%). In the adjusted model, anxiety was the only independent factor associated with poor sleep (OR 1.88, 95% CI: 1.10 to 3.23). The subgroup analysis suggested anxiety (OR 3.94) and lower education (OR 2.58) as correlates in women, whereas retirement (OR 2.27) and low physical activity (OR 2.31) were linked to poor sleep in men. A significant sex–anxiety interaction demonstrated a weaker anxiety effect in men. Conclusions: More than one-third of CHD patients reported poor sleep quality, driven primarily by anxiety, with distinct sex- and age-specific determinants. Sleep and psychological screening should be integrated into secondary prevention, with personalized approaches.
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Davletov et al. (2026) conducted a cross-sectional in Established coronary heart disease (CHD) (n=398). Anxiety vs. No anxiety was evaluated on Poor sleep quality (PSQI > 5) (OR 1.88, 95% CI 1.10 to 3.23, p=0.021). In patients with established coronary heart disease, anxiety was the only independent factor significantly associated with poor sleep quality (OR 1.88).
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