Table 1.

Characteristics of the sample

Low SES in early life (n = 53)High SES in early life (n = 50)P
Age, y, mean ± SD34.0 ± 7.032.2 ± 5.10.14
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 ± 1.31.5 ± 0.60.001
Current SES: own occupation (1–7), mean ± SD*4.1 ± 2.54.0 ± 2.60.98
Current family income >$50,000, n (%)28 (53.8)28 (56)0.85
Perceived stress (0–40), mean ± SD14.1 ± 6.614.6 ± 7.30.71
Daily cigarette smoker, n (%)5 (9.4)2 (4)0.44
Body mass index, kg/m2, mean ± SD24.7 ± 4.223.3 ± 3.80.11
Physical activity, hr/wk, mean ± SD2.7 ± 2.62.5 ± 2.90.83
Alcohol use, drinks per week, mean ± SD2.9 ± 5.62.6 ± 4.20.77
Subjective sleep difficulties (0–3), mean ± SD1.0 ± 0.80.9 ± 0.80.53
  • *Lower values signify higher occupational status.