Table 3. Health related quality of life measured by SF-12 (physical and mental components) according to sociodemographic characteristics and clinical variables.
| Physical component | Mental component | |||
|---|---|---|---|---|
| Variables | Mean | (95%CI) | Mean | (95%CI) |
| Gender | p = 0.033* | p = 0.091* | ||
| Male | 43.2 | 42.2–44.2 | 48.3 | 47.6–49.0 |
| Female | 40.9 | 38.9–42.9 | 47.0 | 45.5–48.4 |
| Age group | p = 0.001** | p = 0.360** | ||
| <70 years | 43.9 | 42.3–45.5 | 47.2 | 46.0–48.4 |
| 70 to 79 years | 43.2 | 41.9–44.5 | 48.7 | 47.8–49.5 |
| ≥ 80 years | 39.6 | 37.7–41.4 | 47.7 | 46.2–49.2 |
| Marital status | p = 0.002* | p = 0.099* | ||
| Married | 43.5 | 42.5–44.5 | 48.3 | 47.6–49.0 |
| Unmarried | 40.3 | 38.4–42.2 | 47.0 | 45.6–48.5 |
| Residence area | p = 0.534* | p = 0.119* | ||
| Urban | 42.5 | 41.4–43.6 | 48.3 | 47.5–49.0 |
| Rural | 43.1 | 41.5–44.8 | 47.1 | 45.8–48.4 |
| State of general practice | p = 0.627* | p = 0.435* | ||
| South Australia | 42.5 | 41.3–43.7 | 48.2 | 47.4–49.0 |
| Queensland | 42.9 | 41.6–44.2 | 47.7 | 46.7–48.7 |
| Attained educational level | p = 0.072** | p = 0.019** | ||
| Degree or higher | 44.0 | 41.3–46.6 | 48.6 | 46.6–50.6 |
| Certificate to advanced diploma | 43.1 | 41.6–44.6 | 48.7 | 47.7–49.8 |
| Secondary | 42.5 | 41.1–43.9 | 47.5 | 46.5–48.5 |
| No schooling to primary | 40.5 | 37.9–43.2 | 46.2 | 44.1–48.3 |
| Working statusa | p<0.001† | p = 0.181† | ||
| Employed full or part time | 47.6 | 45.6–49.6 | 47.8 | 46.3–49.4 |
| Retired | 44.0 | 42.3–45.7 | 49.3 | 48.2–50.4 |
| Pensioner | 40.9 | 39.7–42.1 | 47.6 | 46.7–48.4 |
| Perceived economic situation | p<0.001** | p = 0.070** | ||
| Very high to higher | 45.2 | 43.2–47.2 | 49.0 | 47.5–50.4 |
| Similar to other people | 43.1 | 41.9–44.2 | 48.1 | 47.3–48.9 |
| Lower to very low | 39.3 | 37.2–41.4 | 46.6 | 45.0–48.2 |
| Economic position (quintiles)a | p = 0.040** | p = 0.477** | ||
| Highest | 44.2 | 42.5–45.9 | 47.8 | 46.5–49.0 |
| High | 42.7 | 41.2–44.3 | 48.4 | 47.3–49.5 |
| Middle | 42.3 | 39.8–44.7 | 48.9 | 47.5–50.3 |
| Low | 41.6 | 40.0–43.3 | 47.2 | 45.9–48.5 |
| History of revascularization procedureb | p = 0.009* | p = 0.272* | ||
| No | 40.8 | 39.1–42.4 | 47.4 | 46.2–48.6 |
| Yes | 43.4 | 42.4–44.4 | 48.2 | 47.5–48.9 |
| Time since first ischaemic episodec | p = 0.529** | p = 0.869** | ||
| Up to 5 years | 43.0 | 41.6–44.4 | 48.1 | 47.0–49.1 |
| 6–10 years | 42.9 | 41.1–44.6 | 47.9 | 46.7–49.1 |
| 10+ years | 42.3 | 40.8–43.9 | 47.9 | 46.8–49.0 |
| Number of other CVD conditionsd | p<0.001** | p = 0.301** | ||
| 0 | 44.3 | 43.3–45.4 | 47.6 | 46.8–48.4 |
| 1 | 41.3 | 39.5–43.1 | 48.7 | 47.4–50.0 |
| 2+ | 37.8 | 35.3–40.3 | 48.2 | 46.4–49.9 |
| Number of clinical CVD risk factorse | P = 0.021** | p = 0.567** | ||
| 0–1 | 44.3 | 42.5–46.1 | 47.7 | 46.3–49.1 |
| 2 | 42.9 | 41.5–44.3 | 48.6 | 47.6–49.7 |
| 3+ | 41.6 | 40.1–43.1 | 47.5 | 46.5–48.5 |
* T-test
** ANOVA test for trend
† ANOVA test for heterogeneity
CVD = cardiovascular disease
a–Based on the Socio-Economic Indexes for Areas Index of Relative Socio-economic Advantage and Disadvantaged (SEIFA-IRSAD). Individuals in the lowest quintile were not included due to logistic problems recruiting general practices in poorest areas.
b–Coronary angioplasty or coronary artery bypass graft
c–Angina or myocardial infarction diagnosis, or revascularization procedure
d—Atrial fibrillation/other arrhythmia, heart failure, stroke, heart valve disease, heart-block, cardiomyopathy, and/or left-ventricular dysfunction
e—Hypertension, overweight, dyslipidaemia, diabetes mellitus, and/or chronic kidney disease