Relative odds ratios (OR) of discharge from the Army for any knee related disability
| All women* | White women* | Non-white women* | |||||||
|---|---|---|---|---|---|---|---|---|---|
| OR† | 95% CI† | p† | OR† | 95% CI† | p† | OR† | 95% CI† | p† | |
| *All women: n=692 cases, n=2080 controls. Whites: n=469 cases, n=1050controls. Non-whites: n=223 cases, n=1030 controls. | |||||||||
| †OR, odds ratio; 95% CI, 95% confidence interval; p, p value. | |||||||||
| ‡Quintiles based on distribution observed among all controls in data library. | |||||||||
| §Referent category. | |||||||||
| ¶Includes never married and no longer married. | |||||||||
| **CMF, career management field. Support = support/administration; infantry = infantry/gun crews; e-m repair = electrical/mechanical equipment repair; service = service/supply; communication = communications/intelligence; electrical = electrical equipment repair; technical = technical/allied specialties; “non-occupational” includes trainees, prisoners, and patients. | |||||||||
| Age‡ | |||||||||
| 17–21 years | 1.0§ | – | – | 1.0§ | – | – | 1.0§ | – | – |
| 21–22 years | 0.79 | 0.57 to 1.09 | 0.15 | 0.68 | 0.46 to 1.01 | 0.05 | 1.09 | 0.61 to 1.96 | 0.78 |
| 22–25 years | 0.94 | 0.70 to 1.27 | 0.69 | 0.86 | 0.60 to 1.23 | 0.41 | 1.11 | 0.64 to 1.93 | 0.71 |
| 26–32 years | 1.59 | 1.21 to 2.09 | 0.001 | 1.44 | 1.02 to 2.04 | 0.04 | 1.96 | 1.23 to 3.12 | 0.004 |
| 33–60 years | 2.44 | 1.71 to 3.47 | <0.0001 | 2.66 | 1.66 to 4.26 | <0.0001 | 2.41 | 1.37 to 4.26 | <0.0001 |
| Race | |||||||||
| White | 1.0§ | – | – | – | – | – | – | – | – |
| Non-white | 0.50 | 0.41 to 0.60 | <0.0001 | – | – | – | – | – | – |
| Married | |||||||||
| No¶ | 1.0§ | – | – | 1.0§ | – | – | 1.0§ | – | – |
| Yes | 0.66 | 0.54 to 0.81 | <0.0001 | 0.63 | 0.49 to 0.81 | 0.0003 | 0.71 | 0.51 to 0.99 | 0.04 |
| Duration of service‡ | |||||||||
| 1–15 months | 1.0§ | – | – | 1.0§ | – | – | 1.0§ | – | – |
| 16–32 months | 1.07 | 0.78 to 1.46 | 0.67 | 0.93 | 0.64 to 1.36 | 0.71 | 1.52 | 0.88 to 2.65 | 0.14 |
| 33–59 months | 0.83 | 0.55 to 1.25 | 0.36 | 0.87 | 0.53 to 1.44 | 0.60 | 0.74 | 0.35 to 1.56 | 0.43 |
| 60–119 months | 1.30 | 0.85 to 1.99 | 0.23 | 1.10 | 0.64 to 1.91 | 0.71 | 1.72 | 0.83 to 3.54 | 0.14 |
| 120–414 months | 1.43 | 0.81 to 2.55 | 0.22 | 1.23 | 0.56 to 2.72 | 0.61 | 1.82 | 0.75 to 4.44 | 0.19 |
| CMF** | |||||||||
| Support | 1.0§ | – | – | 1.0§ | – | – | 1.0§ | – | – |
| Infantry | 0.77 | 0.28 to 2.08 | 0.60 | 0.66 | 0.18 to 2.40 | 0.53 | 0.95 | 0.20 to 4.53 | 0.95 |
| E-M repair | 1.62 | 1.11 to 2.37 | 0.01 | 1.85 | 1.15 to 2.96 | 0.01 | 1.19 | 0.60 to 2.39 | 0.62 |
| Communication | 1.37 | 1.03 to 1.83 | 0.03 | 1.37 | 0.95 to 1.98 | 0.09 | 1.42 | 0.87 to 2.33 | 0.16 |
| Health care | 1.10 | 0.84 to 1.45 | 0.49 | 1.27 | 0.90 to 1.79 | 0.18 | 0.79 | 0.46 to 1.24 | 0.28 |
| Technical | 1.64 | 0.98 to 2.75 | 0.06 | 1.46 | 0.78 to 2.72 | 0.23 | 2.16 | 0.84 to 5.60 | 0.11 |
| Electrical | 1.59 | 1.16 to 2.19 | 0.004 | 1.42 | 0.95 to 2.13 | 0.09 | 2.13 | 1.27 to 3.58 | 0.004 |
| Craftsworkers | 1.55 | 0.65 to 3.72 | 0.33 | 1.53 | 0.48 to 4.92 | 0.47 | 1.50 | 0.40 to 5.63 | 0.55 |
| Non-occupational | 0 | – | – | 0 | – | – | 0 | – | – |
| Pay grade | |||||||||
| E1–E3 | 1.0§ | – | – | 1.0§ | – | – | 1.0§ | – | – |
| E4–E6 | 0.62 | 0.45 to 0.87 | 0.01 | 0.69 | 0.46 to 1.03 | 0.07 | 0.49 | 0.28 to 0.86 | 0.01 |
| E7–E9 | 0.20 | 0.12 to 0.35 | <0.0001 | 0.25 | 0.12 to 0.50 | <0.0001 | 0.14 | 0.06 to 0.33 | <0.0001 |