Table 1.
Variable | Mean (SD) | Range | n |
---|---|---|---|
Age at induction | 19.6 (1.5) | 16–30 | 6,190 |
Twin education at enlistment | 12.2 (1.4) | 5–20 | 6,168 |
Parental education | 11.2 (2.5) | 0–19 | 6,318 |
AFQT percentile scores at induction | |||
Raw scores | 55.3 (23.5) | 10–99 | 6,037 |
Transformed scores | .17 (.71) | −1.29 to 2.32 | 6,037 |