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. 2016 Sep-Oct;58:69–79. doi: 10.1016/j.intell.2016.06.005

Table 2.

Descriptive statistics for the mental health outcome variables.

Obs (%) Mean SD Min Max Mean difference t χ2 p
AFQT (IQ)
 Male 2608 − 0.23 1.08 − 3 3 0.083 2.98 .003
 Female 2892 − 0.32 0.98 − 3 3
Age
 Male 2779 49.76 0.77 49 55 − 0.001 − 0.04 .97
 Female 3014 49.76 0.75 49 55
Adult SES
 Male 2019 0.07 0.83 − 2.21 2.86 0.03 1.14 .25
 Female 2155 0.04 0.79 − 2.53 2.85
Income
 Male 2256 $82,135 89,450 0 $497,763 $12,502 5.23 <.001
 Female 2449 $69,633 74,463 0 $497,763
Education
 Male 2585 13.04 2.55 2 20 − 0.31 − 4.45 <.001
 Female 2869 13.35 2.63 3 20
Occupation status
 Male 2397 35.40 13.60 9.56 80.5 − 0.90 − 2.32 .02
 Female 2578 36.30 13.74 9.56 80.5
CES-depression
 Male 2745 3.30 4.10 0 21 − 1.23 − 10.40 <.001
 Female 2989 4.53 4.79 0 21
SF 12: mental health status (continuous)
 Male 2752 17.46 8.26 3.87 58.41 − 2.21 − 9.33 <.001
 Female 2977 19.67 9.57 1 60
SF 12: mental health status poor
 Male 58.74 <.001
 No 2317 (84)
 Yes 435 (16)
 Female
 No 2265 (76)
 Yes 712 (24)
Sleep difficulty
 Male 2752 3.58 3.24 1 13 − 0.97 − 10.80 <.001
 Female 2991 4.55 3.55 1 13
Diagnoses of depression
 Male 152.48 <.001
 Yes 274 (10)
 No 2498 (90)
 Female
 Yes 656 (22)
 No 2348 (78)