Table 1

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

CharacteristicResponders 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)
Male sex (%)78.573.20.19
Angina class III/IV* (%)
Comorbid illness (%)
    Prior myocardial infarction43.246.50.49
    Diabetes mellitus16.222.00.10
    Stroke/transient ischaemic attack6.716.5< 0.001
    Renal disease1.53.10.17
    Peripheral vascular disease7.510.20.29
    Congestive heart failure8.612.60.14
    Chronic obstructive lung disease3.94.70.65
Very positive stress test69.369.40.98
Left ventricular ejection fraction <50%23.826.00.60
Severity of coronary artery disease (%)0.21
    Left main or 3 vessel stenosis55.652.8
    1 or 2 vessel stenosis involving the PLAD18.314.2
    1 or 2 vessel stenosis not involving PLAD26.133.1
Angina frequency and HRQOL
    Angina attacks ≥3 times a week69.568.50.82
    Physical functioning69.966.20.03
    Relief from pain63.260.80.27
    Quality of sleep57.257.50.89
    Emotional wellbeing66.163.60.26
    General health perception55.652.20.12