Table 1.
Baseline characteristics of participants by cumulative socioeconomic status score, the CHAMP study
| Characteristics | Overall sample | Tertile groups of cumulative SES | ||
|---|---|---|---|---|
| High (0–3) | Intermediate (4) | Low (5–7) | ||
| N | 1522 | 768 | 314 | 440 |
| Age, years | 77·4 ± 5·5 | 77·5 ± 5·7 | 77·8 ± 5·6 | 77·1 ± 5·2 |
| Age categories | ||||
| 70–79 (n = 1080) | 71·0 | 69·8 | 67·8 | 75·2 |
| 80+ (n = 442) | 29·0 | 30·2 | 32·2 | 24·8 |
| Country of birth | ||||
| Australian-born (n = 784) | 51·5 | 65·4 | 49·7 | 28·6 |
| Other (n = 738) | 48·5 | 34·6 | 50·3 | 71·4 |
| Structural and functional social support | ||||
| Marital status | ||||
| Married/Defacto (n = 1168) | 76·7 | 78·9 | 73·2 | 75·5 |
| Not married (n = 354) | 23·3 | 21·1 | 26·8 | 24·5 |
| Live alone (n = 284) | 18·6 | 17·8 | 17·8 | 18·6 |
| Live with children (n = 279) | 18·3 | 13·4 | 20·1 | 25·7 |
| No family support (n = 174) | 11·4 | 10·4 | 12·1 | 12·7 |
| No non-family support (n = 361) | 23·7 | 18·1 | 24·2 | 33·2 |
| Social interaction score | 6·0 ± 1·3 | 6·2 ± 1·3 | 5·9 ± 1·2 | 5·7 ± 1·4 |
| Social satisfaction score | 19·4 ± 2·3 | 19·7 ± 2·1 | 19·3 ± 2·4 | 18·8 ± 2·7 |
| Social satisfaction | ||||
| High (n = 955) | 62·7 | 67·1 | 63·7 | 54·5 |
| Low (n = 567) | 37·3 | 32·9 | 36·3 | 45·5 |
| Psychological distress | ||||
| Depressive symptoms (n = 222) | 14·6 | 9·1 | 15·9 | 23·2 |
| Anxiety symptoms (n = 109) | 7·2 | 6·3 | 8·6 | 7·7 |
| Health-related behaviours | ||||
| Alcohol consumption | ||||
| Abstainer (n = 351) | 23·1 | 20·6 | 24·2 | 26·6 |
| Moderate drinkers (n = 1032) | 67·8 | 69·5 | 68·5 | 64·3 |
| Heavy drinkers (n = 117) | 6·8 | 8·6 | 6·7 | 6·8 |
| Missing (n = 22) | 1·4 | 1·3 | 0·6 | 2·3 |
| Smoking | ||||
| Non-smoker (n = 564) | 37·1 | 42·5 | 37·3 | 27·5 |
| Ex-smoker (n = 868) | 57·0 | 54·0 | 57·3 | 62·0 |
| Current smoker (n = 88) | 5·8 | 3·4 | 5·4 | 10·2 |
| Missing (n = 2) | 0·1 | 0·1 | 0·0 | 0·2 |
| Physical activity | ||||
| Active (n = 1147) | 75·4 | 77·4 | 75·5 | 71·8 |
| Inactive (n = 372) | 24·4 | 22·5 | 24·2 | 28·5 |
| Missing (n = 3) | 0·2 | 0·1 | 0·3 | 0·2 |
| Body mass index, kg/m2 | 27·8 ± 3·9 | 27·4 ± 3·8 | 28·1 ± 3·7 | 28·3 ± 4·3 |
| Body mass index categories | ||||
| Underweight/normal (n = 362) | 23·8 | 26·2 | 19·4 | 22·7 |
| Overweight (n = 730) | 48·0 | 48·8 | 51·9 | 43·6 |
| Obese (n = 405) | 26·6 | 23·7 | 27·1 | 31·4 |
| Missing (n = 25) | 1·6 | 1·3 | 1·6 | 2·3 |
| Self-rated health | ||||
| Good or excellent (n = 1065) | 70·0 | 74·6 | 71·0 | 61·1 |
| Fair, poor, very poor (n = 454) | 29·8 | 25·3 | 29·0 | 38·4 |
| Missing (n = 3) | 0·2 | 0·1 | 0·0 | 0·5 |
Abbreviation: SES socioeconomic status
Data are mean ± SD for continuous variables or percent for categorical variables, unless otherwise stated