Table 3.
Association between clusters intra-groups of metabolic, cardiovascular, cardiovascular, and musculoskeletal conditions with the health related quality of life among individuals ≥20 years in South Australia, 2015 (N = 2912)
| Physical component score | Mental component score | ||||||
|---|---|---|---|---|---|---|---|
| (%) | Crude | Adjusted | Crude | Adjusted | |||
| Model 1 | Model 2 | Model 1 | Model 2 | ||||
| Mean (SE) | Mean (SE) | Mean (SE) | Mean (SE) | Mean (SE) | Mean (SE) | ||
| Metabolic conditions | p < 0.001 | p < 0.001 | p < 0.001 | p = 0.21 | p = 0.99 | p = 0.90 | |
| None | 61.4 | 51.1 (0.3) | 49.9 (0.2) | 49.4 (0.2) | 52.5 (0.2) | 52.4 (0.2) | 52.4 (0.2) |
| 1 | 27.9 | 45.3 (0.4) | 46.5 (0.4) | 47.1 (0.3) | 52.4 (0.4) | 52.5 (0.3) | 52.4 (0.3) |
| 2+ | 10.7 | 40.8 (0.7) | 44.7 (0.6) | 46.3 (0.6) | 51.7 (0.5) | 52.4 (0.4) | 52.3 (0.4) |
| R 2 | 12.4% | 30.2% | 36.9% | 0.1% | 23.4% | 24.1% | |
| Cardiovascular conditions | p < 0.001 | p < 0.001 | p < 0.001 | p = 0.02 | p = 0.51 | p = 0.39 | |
| None | 74.0 | 50.5 (0.2) | 49.4 (0.2) | 49.0 (0.2) | 52.1 (0.2) | 52.3 (0.2) | 52.3 (0.2) |
| 1 | 19.1 | 44.1 (0.6) | 46.8 (0.6) | 47.8 (0.5) | 53.3 (0.7) | 53.1 (0.3) | 53.1 (0.4) |
| 2+ | 6.9 | 37.9 (0.8) | 42.4 (0.9) | 44.3 (0.9) | 52.8 (1.1) | 52.1 (0.6) | 52.3 (0.6) |
| R 2 | 13.2% | 29.5% | 36.9% | 0.3% | 23.5% | 24.1% | |
| Gastrointestinal conditions | p < 0.001 | p < 0.001 | p < 0.001 | p < 0.001 | p < 0.001 | p = 0.001 | |
| None | 83.6 | 49.2 (0.3) | 48.9 (0.2) | 48.7 (0.2) | 52.8 (0.2) | 52.7 (0.2) | 52.7 (0.2) |
| 1 | 14.3 | 44.7 (0.6) | 46.2 (0.5) | 46.7 (0.5) | 50.7 (0.5) | 51.6 (0.5) | 51.6 (0.5) |
| 2+ | 2.1 | 44.7 (1.6) | 43.2 (1.3) | 45.0 (1.3) | 47.1 (1.5) | 48.7 (1.1) | 49.2 (1.1) |
| R 2 | 3.8% | 28.4% | 36.9% | 1.5% | 23.9% | 24.1% | |
| Musculoskeletal conditions | p < 0.001 | p < 0.001 | p < 0.001 | p = 0.18 | p = 0.16 | p = 0.34 | |
| None | 69.5 | 51.4 (0.2) | 50.5 (0.2) | 50.2 (0.2) | 52.6 (0.2) | 52.5 (0.2) | 52.5 (0.2) |
| 1 | 24.4 | 42.1 (0.4) | 44.0 (0.4) | 44.6 (0.4) | 52.1 (0.5) | 52.4 (0.4) | 52.5 (0.4) |
| 2+ | 6.1 | 38.9 (0.8) | 42.1 (0.8) | 43.2 (0.7) | 51.7 (0.8) | 51.2 (0.7) | 51.4 (0.7) |
| R 2 | 20.1% | 33.6% | 36.9% | 0.1% | 23.5% | 24.1% | |
Metabolic conditions: obesity, dyslipidaemia, and/or diabetes mellitus. Cardiovascular conditions: hypertension, myocardial infarction, angina, atrial fibrillation, heart failure, and/or stroke. Gastrointestinal conditions: irritable bowel syndrome, gastroesophageal reflux, coeliac disease, Chrohn’s disease and/or ulcerative colitis. Musculoskeletal conditions: osteoarthritis, gout and/or osteoporosis
Model 1: predicted means adjusted for sex, age, marital status, area of residence, educational level, working status, socioeconomic position (Socio-Economic Indexes for Areas Index of Relative Socio-economic Advantage and Disadvantaged), fruit/vegetable consumption, physical activity, smoking status, alcohol intake, and mental health status
Model 2: predicted means adjusted for variables in model 1 + mutual adjustment between the cluster intragroup of chronic conditions
R2 = Determination coefficient in %. Adjusted R2 for models including just sociodemographic, lifestyle, and mental health status variables were 27.2% for PCS and 23.4% for MCS. The R2 for Model 2 is the same for all clusters intragroup, as the regression models included a mutual adjustment between them