Table 2

Military characteristics of the US Army study population, 2014–2017 (N=657 417) as of the last person-specific observation. Values represent numbers (percentages).

FactorMales; n=560 243 (85.2)Females; n=97 174 (14.8)
No discharge
386 436 (69.0)
Discharged
173 807 (31.0)
No discharge
66 833 (68.8)
Discharged
30 341 (31.2)
Military pay gradeP<0.001*P=0.001*
≤E-4170 482 (62.9)100 574 (37.1)30 841 (61.5)19 310 (38.5)
E-5 and E-6101 670 (72.5)38 602 (27.5)15 433 (74.8)5200 (25.2)
E-7 to E-941 859 (74.1)14 635 (25.9)5464 (75.2)1801 (24.8)
W-1 to O-348 957 (78.6)13 346 (21.4)10 544 (79.1)2793 (20.9)
≥O-423 468 (77.9)6650 (22.1)4551 (78.6)1237 (21.4)
Active service timeP<0.001*P<0.001*
<4 years168 536 (68.8)76 450 (31.2)32 520 (67.7)15 502 (32.3)
>4–10 years102 350 (66.4)51 694 (33.6)17 546 (66.6)8780 (33.4)
>10–16 years59 802 (77.2)17 675 (22.8)9063 (78.6)2466 (21.4)
>16 years55 748 (66.6)27 988 (33.4)7704 (68.2)3593 (31.8)
Combat-focusedP<0.001*P=0.255*
No245 696 (70.5)102 832 (29.5)63 017 (68.7)28 704 (31.3)
Yes140 740 (66.5)70 975 (33.5)3726 (69.5)1637 (30.5)
Military unit typeP<0.001*P<0.001*
Combat-deployable182 518 (66.0)94 133 (34.0)28 819 (68.4)13 291 (31.6)
Training/administration68 369 (67.5)32 949 (32.5)11 832 (59.4)8097 (40.6)
Special operations28 852 (82.2)6249 (17.8)1567 (83.2)317 (16.8)
Medical15 894 (65.4)8402 (34.6)8794 (70.6)3654 (29.4)
Other/uncertain90 803 (73.9)32 074 (26.1)15 821 (76.0)4982 (24.0)
  • *Results of χ2 tests.