Socio-demographic factors, behaviour and personality: associations with psychological distress.

BACKGROUND Anxiety, psychological distress and personality may not be independent risk factors for cardiovascular disease; however they may contribute via their relationship with unhealthy lifestyle behaviours. This study aimed to examine the association between psychological distress, risk behaviours and patient demographic characteristics in a sample of general practice patients aged 40-65 years with at least one risk factor for cardiovascular disease. DESIGN Cross-sectional analytic study. METHODS Patients, randomly selected from general practice records, completed a questionnaire about their behavioural risk factors and psychological health as part of a cluster randomized controlled trial of a general practice based intervention to prevent chronic vascular disease. The Kessler Psychological Distress Score (K10) was the main outcome measure for the multilevel, multivariate analysis. RESULTS Single-level bi-variate analysis demonstrated a significant association between higher K10 and middle age (p = 0.001), high neuroticism (p = 0), current smoking (p = 0), physical inactivity (p = 0.003) and low fruit and vegetable consumption (p = 0.008). Socioeconomic (SES) indicators of deprivation (employment and accommodation status) were also significantly associated with higher K10 (p = 0). No individual behavioural risk factor was associated with K10 on multilevel multivariate analysis; however indicators of low SES remained significant (p < 0.001). CONCLUSIONS When all factors were considered, psychological distress was not associated with behavioural risk factors for cardiovascular disease. Other underlying factors, such as personality type and socioeconomic status, may be associated with both the behaviours and the distress.