Table 1

Demographic and health behaviour 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)
Age, yearsP<0.001*P<0.001*
≤2298 351 (69.1)43 912 (30.9)17 941 (64.8)9754 (35.2)
23–27102 712 (66.1)52 620 (33.9)18 487 (68.3)8591 (31.7)
28–35101 863 (72.0)39 570 (28.0)17 733 (72.8)6621 (27.2)
≥3683 510 (68.9)37 705 (31.1)12 672 (70.2)5375 (29.8)
RaceP<0.001*P<0.001*
White269 731 (68.2)126 022 (31.8)32 726 (66.8)16 256 (33.2)
Black75 041 (69.5)32 972 (30.5)24 364 (69.1)10 899 (30.9)
Asian or Pacific Islander22 021 (75.0)7322 (25.0)5112 (76.0)1612 (24.0)
Native American or Alaska Native2711 (66.2)1381 (33.8)616 (62.9)364 (37.1)
Multiracial, other or unspecified16 932 (73.5)6110 (26.5)4015 (76.8)1210 (23.2)
Marital statusP<0.001*P=0.001*
Married222 598 (70.3)94 033 (29.7)32 376 (69.3)14 350 (30.7)
Never married148 065 (67.6)70 942 (32.4)26 584 (68.5)12 243 (31.5)
Formerly married15 773 (64.1)8832 (35.9)7873 (67.8)3748 (32.2)
Tobacco useP<0.001*P<0.001*
No229 160 (71.3)92 056 (28.7)52 010 (69.8)22 503 (30.2)
Yes157 276 (65.8)81 751 (34.2)14 823 (65.4)7838 (34.6)
  • *Results of χ2 tests.