Table 4

Adjusted HRs (aHR) with 95% CIs from sex-stratified multivariable Weibull regression models for military service discharge (N=657 417)

FactorMales; n=560 243Females; n=97 174
aHR*95% CIaHR*95% CI
Had ankylosing spondylitis2.5***2.1 to 3.02.1***1.4 to 3.2
Had rheumatoid arthritis1.8***1.5 to 2.21.8***1.4 to 2.4
Had psoriasis1.4***1.3 to 1.51.4***1.2 to 1.7
Had systemic lupus erythematosus1.7**1.2 to 2.31.5*1.0 to 2.1
Had diabetes mellitus2.4***2.2 to 2.72.2***1.8 to 2.5
Age, years (referent: ≤22)
23–271.3**1.1 to 1.50.90.8 to 1.1
28–351.4***1.2 to 1.61.00.8 to 1.2
≥361.7***1.5 to 2.01.21.0 to 1.4
Race (referent: Asian or Pacific Islander)
White1.3***1.3 to 1.41.5***1.4 to 1.6
Black1.2***1.2 to 1.21.2***1.1 to 1.3
Native American or Alaskan1.3***1.2 to 1.51.5***1.3 to 1.7
Multiracial, other or unspecified1.2***1.1 to 1.21.1*1.0 to 1.2
Marital status (referent: married)
Never married1.2***1.2 to 1.20.9*0.8 to 1.0
Formerly married1.3***1.2 to 1.31.1***1.0 to 1.1
Military pay grade (referent: ≥O-4)
≤E-46.6***5.7 to 7.65.4***4.7 to 6.1
E-5 and E-62.0***1.8 to 2.21.8***1.5 to 2.0
E-7 to E-91.2**1.1 to 1.31.10.9 to 1.2
W-1 to O-31.6***1.4 to 1.71.4***1.3 to 1.6
Active military service time, years (referent: <4)
>4–102.1***1.9 to 2.22.1***1.9 to 2.2
>10–161.9***1.8 to 2.11.7***1.5 to 2.0
>163.8***3.4 to 4.23.5***3.0 to 3.9
Held a combat-focused occupation1.2***1.1 to 1.41.2*1.0 to 1.4
Military unit type (referent: special operations)
Combat-deployable1.9***1.8 to 2.01.7***1.4 to 2.0
Training/administration2.2***1.8 to 2.82.8***1.9 to 4.0
Medical2.3***1.9 to 2.71.7***1.4 to 2.1
Other/uncertain1.4***1.2 to 1.71.21.0 to 1.6
Self-reported tobacco use1.4***1.3 to 1.51.3***1.2 to 1.3
  • Models adjusted for all listed variables.

  • *Statistical significance: ***p<0.001; **p<0.01; *p<0.05.