Table 1.
Characteristics of the sample
| Low SES in early life (n = 53) | High SES in early life (n = 50) | P | |
|---|---|---|---|
| Age, y, mean ± SD | 34.0 ± 7.0 | 32.2 ± 5.1 | 0.14 |
| Sex, female, n (%) | 34 (64.2) | 29 (58) | 0.55 |
| Descent, European, n (%) | 32 (60.4) | 38 (76) | 0.09 |
| Early SES: parent occupation (1–7), mean ± SD* | 6.0 ± 1.3 | 1.5 ± 0.6 | 0.001 |
| Current SES: own occupation (1–7), mean ± SD* | 4.1 ± 2.5 | 4.0 ± 2.6 | 0.98 |
| Current family income >$50,000, n (%) | 28 (53.8) | 28 (56) | 0.85 |
| Perceived stress (0–40), mean ± SD | 14.1 ± 6.6 | 14.6 ± 7.3 | 0.71 |
| Daily cigarette smoker, n (%) | 5 (9.4) | 2 (4) | 0.44 |
| Body mass index, kg/m2, mean ± SD | 24.7 ± 4.2 | 23.3 ± 3.8 | 0.11 |
| Physical activity, hr/wk, mean ± SD | 2.7 ± 2.6 | 2.5 ± 2.9 | 0.83 |
| Alcohol use, drinks per week, mean ± SD | 2.9 ± 5.6 | 2.6 ± 4.2 | 0.77 |
| Subjective sleep difficulties (0–3), mean ± SD | 1.0 ± 0.8 | 0.9 ± 0.8 | 0.53 |
*Lower values signify higher occupational status.