Women achieve equivalent health-related quality of life benefits to men from attending cardiac rehabilitation: a matched case-control study

Type of funding sources: Public grant(s) – National budget only. Main funding source(s): SOLVE-CHD NHMRC Synergy Grant

Coronary heart disease (CHD) is the leading cause of death in women globally; and women have worse health outcomes from CHD than men, including poorer health-related quality of life (HRQL). Comprehensive cardiac rehabilitation (EBCR) has well-established benefit for patients with CHD in improving HRQL. These benefits have rarely been distinguished separately for women despite known differences to men.

The aim of this study was to compare women and men’s HRQL outcomes after accounting for differences in age, partnership status and diagnosis.

A secondary analysis of a larger prospective observational study of CR outcomes using a matched case-control study of women and men. The sample included patients enrolled in four CR programs following admission for CHD (myocardial infarction [MI], percutaneous coronary intervention [PCI] or coronary artery bypass grafting [CABG]). Women were matched to men based on age (within 0-2 years), marital status (single, or partnered), and diagnosis (MI, PCI, or CABG). Sociodemographic data were collected from the participants and clinical information (diagnosis, comorbidities) from the medical record. HRQL was measured using the Short Form-12 Health Survey (SF-12).

Thirty-seven matched women and men were included in this study at baseline, of whom 27 completed the study (72.9%). There were no significance differences in sociodemographic and clinical characteristics between men and women at baseline.

Both women and men improved HRQL substantially from pre-post CR, with no significant differences in change scores in any domain between the sexes despite women having worse scores at baseline in Physical Functioning (mean score 41.59 vs 44.15), Bodily Pain (mean score 47.78 vs 48.71) and overall physical summary score (mean score 44.14 vs 45.29).

Women had clinically meaningful improvements in Physical Functioning (MD 6.51, 95% CI 2.59-10.44) and Role Physical (MD 6.42, 95% CI 2.81-10.03), Mental Health (MD 4.35, 95% CI 2.05-6.66) and Bodily Pain (MD 4.97, 95% CI 1.36-8.60) and in the overall physical summary score (MD 5.67, 95% CI 1.98-9.38). Men achieved clinically meaningful improvements in the same domains as women plus Vitality (MD 5.11, 95% CI 0.87-9.36) and Social Function (MD 8.54, 95% CI 3.98-13.09).

When matched to men for age, partnership status, and diagnosis, women achieve clinically meaningful and equivalent HRQL outcomes following CR. Women significantly improved in overall physical and mental health HRQL, as well as in the majority of HRQL domains. These findings could be used to strengthen advocacy in supporting women with CHD to participate and complete CR programs.