Characteristics of Swedish patients with chronic stable angina who underwent coronary revascularisation and survived at least four years, by response to four year follow up questionnaire
| Characteristic | Responders to baseline and four year questionnaire (n=827) | Surviving non-responders to four year questionnaire (n=127) | p Value |
|---|---|---|---|
| *Angina class as defined by the Canadian Cardiovascular Society. HRQOL, health related quality of life (minimum score is 0; maximum score is 100); PLAD, proximal left anterior descending coronary artery. | |||
| Mean age (years) | 66.0 | 66.6 | 0.33 |
| Male sex (%) | 78.5 | 73.2 | 0.19 |
| Angina class III/IV* (%) | 60.1 | 59.1 | 0.82 |
| Comorbid illness (%) | |||
| Prior myocardial infarction | 43.2 | 46.5 | 0.49 |
| Diabetes mellitus | 16.2 | 22.0 | 0.10 |
| Stroke/transient ischaemic attack | 6.7 | 16.5 | < 0.001 |
| Renal disease | 1.5 | 3.1 | 0.17 |
| Peripheral vascular disease | 7.5 | 10.2 | 0.29 |
| Congestive heart failure | 8.6 | 12.6 | 0.14 |
| Chronic obstructive lung disease | 3.9 | 4.7 | 0.65 |
| Hypertension | 37.4 | 46.5 | 0.05 |
| Very positive stress test | 69.3 | 69.4 | 0.98 |
| Left ventricular ejection fraction <50% | 23.8 | 26.0 | 0.60 |
| Severity of coronary artery disease (%) | 0.21 | ||
| Left main or 3 vessel stenosis | 55.6 | 52.8 | |
| 1 or 2 vessel stenosis involving the PLAD | 18.3 | 14.2 | |
| 1 or 2 vessel stenosis not involving PLAD | 26.1 | 33.1 | |
| Angina frequency and HRQOL | |||
| Angina attacks ≥3 times a week | 69.5 | 68.5 | 0.82 |
| Physical functioning | 69.9 | 66.2 | 0.03 |
| Relief from pain | 63.2 | 60.8 | 0.27 |
| Quality of sleep | 57.2 | 57.5 | 0.89 |
| Emotional wellbeing | 66.1 | 63.6 | 0.26 |
| General health perception | 55.6 | 52.2 | 0.12 |