Sense of coherence as an independent predictor of health-related quality of life among coronary heart disease patients.
OBJECTIVE
The aim of this study was to determine whether sense of coherence (SOC) at baseline predicts health-related quality of life (HRQoL) at 12-28-month follow-up among patients with coronary heart disease when controlled for sociodemographic and medical variables.


METHODS
A total of 179 consecutive patients (58.28 ± 6.52 years, 16.8% women) scheduled for coronary angiography (CAG) were interviewed before CAG and 12-28 months after. SOC was measured with the 13-item Orientation to Life Questionnaire. HRQoL was measured using the Short Form Health Survey 36 (SF-36), from which the mental and physical component summaries (MCS, PCS) were calculated. The relationship between SOC and HRQoL was examined using regression analyses.


RESULTS
SOC proved to be a significant predictor of the MCS-score (B = 0.29; 95% CI = 0.17-0.41) and PCS-score (B = 0.18; 95% CI = 0.06-0.31) when not adjusted for possible confounding sociodemographic and medical variables. After adjustment for sociodemographic and medical variables, SOC remained a predictor of the MCS-score (B = 0.26; 95% CI = 0.14-0.39). SOC also remained a predictor of the PCS-score when controlled for gender, age and family income; however, the association disappeared after adjustment for functional status (B = 0.07; 95% CI = -0.05 to 0.19).


CONCLUSIONS
SOC is a predictor of mental and physical HRQoL at 12-28-month follow-up, crude and also after adjustment. Patients undergoing CAG with low SOC thus deserve particular attention in regard to the maintenance and improvement of their HRQoL.
Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Safarik University, Kosice, Slovak Republic. silarova.barbora@gmail.com
Barbora
B
Silarova
Iveta
I
Nagyova
Jaroslav
J
Rosenberger
Martin
M
Studencan
Daniela
D
Ondusova
Sijmen A
SA
Reijneveld
Jitse P
JP
van Dijk
D000223:Adaptation, Psychological; D000328:Adult; D000368:Aged; D001294:Attitude to Health; D003327:Coronary Disease / Q000523:psychology*; D005260:Female; D005500:Follow-Up Studies; D006293:Health Promotion; D006304:Health Status; D006306:Health Surveys; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D060685:Sense of Coherence; D011795:Surveys and Questionnaires