Illness Perceptions in Patients with Premature Coronary Artery Disease: A Sex-Based Analysis 8 Years After the Diagnosis

Association between cognitive representation of illness and the outcome of patients with premature coronary artery disease

OBJECTIVE

To assess whether illness perception (IP) in overall and each of its three dimensions (cognitive, emotional and comprehension) have an independent prognostic value in men and women with premature coronary artery disease (CAD).

METHODS

In a prospective cohort, 778 patients (370 men and 408 women) with premature CAD(diagnosed in men aged<45 y and women aged<55 y), who had completed brief illness perception questionnaire were followed up for 4 years. Outcome event was defined as composite of all-cause mortality, nonfatal myocardial infarction(MI), repeated revascularization or/and stroke. Analysis was performed for men and women separately. High scores for each item of illness perception indicate positive perception.

RESULTS

Among men, 90 patients (24.3%) experienced events: 14(3.8%) death, 23(6.2%) nonfatal MI, 9(2.4%) strokes, and 44(11.9%) revascularization. Men with and without event showed no difference regarding the traditional risk factors, depression and anxiety symptoms. Among women, 72(17.6%) had events: 11(2.7%) death, 23(5.6%) nonfatal MI, 7(1.7%) strokes and 31(7.6%) revascularization; who had a lower education, more severe CAD, and more depressive symptoms. After adjustments for potential confounders, overall IP and only its cognitive dimension were significantly associated with the outcome in women:1-score increase in the women's cognitive perception resulted in an 18% decrease in the event (HR = 0.82, 95% CI:0.72 to 0.95; P = 0.007). In the men, this effect remained nonsignificant either for IP or its dimensions.

CONCLUSIONS

Positive cognitive representation of illness was predictive of a decreased likelihood of mortality and/or cardiovascular events in women with premature CAD. Interventional studies are needed to confirm the results.

Association between illness perception and health-related quality of life in patients with preexisting premature coronary artery disease

OBJECTIVES

Illness perception in younger age differs from that in older age. We aimed to examine the association between illness perception and health-related quality of life (HRQoL) in patients with premature coronary artery disease (CAD).

METHODS

In a cross-sectional design, between November 2016 and September 2017, a total of 779 adults (52.5% female) with premature CAD (diagnosed in men aged ≤ 45 y and women aged ≤ 55 y) completed the Beck Depression Inventory-II, the Beck Anxiety Inventory, the Brief Illness Perception, and the Short-Form Health Survey 36 questionnaires in an outpatient clinic 8 years after the diagnosis.

RESULTS

The patients were treated with coronary artery bypass graft surgery (24.6%), percutaneous coronary intervention (39.5%), and medical treatment (35.8%). The cognitive, emotional, and comprehension aspects of illness perception had significant associations with both physical and mental health in univariable analysis (all Ps < 0.001). After adjustments for potential confounding factors, higher cognitive perception was independently associated with greater physical health [OR = 4.13, Confidence interval (CI): 3.53-4.72] and mental health (OR = 3.17, CI: 2.57-3.77). Additionally, emotional perception was also directly associated with higher physical (OR = 1.62, CI: 1.17-2.06) and mental (OR = 1.52, CI: 1.07-1.96) health; all Ps < 0.001.

CONCLUSIONS

Of the 3 different aspects of illness perception, cognitive perception appeared to have the greatest influence on HRQoL, either physical or mental health. Further studies are needed to investigate whether cognitive interventions can improve HRQoL in premature CAD patients and, thus, their outcome.