Table 1 Sample characteristics
Study group (n = 866) | Control group (n = 11,436) | Group differences | |
|---|---|---|---|
Demographic variables | |||
Age (years)—M (SD) | 34.5 (6.5) | 33.4 (6.2) | t(12,300) = -5.0, p < 0.001 |
SES Category—n (%) | χ2(2) = 31.6, p < 0.001 | ||
High | 586 (67.7%) | 7446 (65.1%) | |
Middle | 253 (29.2%) | 3867 (33.8%) | |
Low | 27 (3.1%) | 123 (1.1%) | |
BMI—M (SD) | 22.0 (2.0) | 22.2 (1.9) | t(12,300) = 2.8, p < 0.05 |