Key result
Type D personality linked to poorer asthma control via depression, anxiety, and impaired sleep.
Why the study?
The psychological mechanisms underlying the association between Type D personality and asthma control remained unclear.
Does Type D personality affect asthma control through depression, anxiety, and sleep quality in adult asthma patients?
Cross-Sectional (n=150)
No
Does Type D personality affect asthma control through depression, anxiety, and sleep quality in adult asthma patients?
Effect estimate: β = -0.088 (95% CI -0.132, -0.047)
Type D personality is indirectly associated with poorer asthma control through increased psychological symptom burden and impaired sleep quality.
Supports depression-mediated pathway from Type D personality to asthma control; leaves open causal inference and clinical utility.
Type D personality, defined by the co-occurrence of negative affectivity and social inhibition, has been associated with poorer health outcomes in chronic diseases, including asthma. However, the psychological mechanisms underlying the relationship between Type D personality and asthma control remain unclear. This cross-sectional study included 150 adult patients with asthma recruited from a tertiary outpatient clinic. Participants completed the Asthma Control Test (ACT), Type D Personality Scale (DS-14), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), and Pittsburgh Sleep Quality Index (PSQI). Type D personality traits were identified in 39.3% of the sample. Compared with non–Type D individuals, patients with Type D personality had higher depressive and anxiety symptom scores and poorer sleep quality (all p < 0.05). Mediation analyses using bootstrapping (5,000 resamples) revealed significant indirect effects of Type D personality on asthma control through depression (β = -0.088, 95% CI [-0.132, -0.047]), anxiety (β = -0.115, 95% CI [-0.158, -0.078]), and sleep quality (β = -0.057, 95% CI [-0.091, -0.029]). These indirect effects remained statistically significant after adjustment for age, sex, smoking status, and FEV1 (% predicted). These findings suggest that Type D personality is indirectly associated with poorer asthma control through increased psychological symptom burden and impaired sleep quality.
No takes yet. Share an insight, caveat, or question.
Şimşek et al. (2026) conducted a cross-sectional in Asthma (n=150). Type D personality vs. Non-Type D personality was evaluated on Indirect effect of Type D personality on asthma control through depression (β = -0.088, 95% CI -0.132, -0.047). Type D personality was indirectly associated with poorer asthma control through depression (β = -0.088), anxiety (β = -0.115), and impaired sleep quality (β = -0.057).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: