Table 3.
Predictors of service connection for back pain.
| Parameter | Point Estimate (OR) | 95% CI | p-Value |
|---|---|---|---|
| Full Model | |||
| Work Status at C&P Examination | |||
| Active | 0.68 | 0.33 to 1.39 | 0.29 |
| Inactive | 1 (ref) | — | |
| Functional Impairment | |||
| Yes | 4.05 | 1.98 to 8.25 | <0.001 |
| No | 1 (ref) | — | |
| Age on 2014 Jul 1 (per yr) | 0.99 | 0.95 to 1.03 | 0.50 |
| Race | |||
| Black | 0.43 | 0.17 to 1.11 | 0.33 |
| Hispanic | 0.54 | 0.20 to 1.44 | |
| Other | 0.63 | 0.12 to 3.51 | |
| Unknown | 1.61 | 0.32 to 8.15 | |
| White | 1 (ref) | — | |
| BMI (per unit) | 1.07 | 0.98 to 1.16 | 0.13 |
| Current Smoker | |||
| Yes | 0.65 | 0.33 to 1.31 | 0.23 |
| No | 1 (ref) | — | |
| Sex | |||
| Female | 1.13 | 0.35 to 3.64 | 0.84 |
| Male | 1 (ref) | — | |
| Illegal Drug Use | |||
| Yes | 1.76 | 0.72 to 4.30 | 0.21 |
| No | 1 (ref) | — | |
| Prescribed Opioid Use | |||
| Yes | 0.83 | 0.37 to 1.86 | 0.65 |
| No | 1 (ref) | — | |
| Degree of Depression | |||
| None | 1.62 | 0.48 to 5.41 | 0.93 |
| Mild | 1.68 | 0.36 to 7.90 | |
| Moderate | 1.98 | 0.46 to 8.51 | |
| Moderately Severe | 1.61 | 0.30 to 8.76 | |
| Severe | 1 (ref) | — | |
| Parsimonious Model: Functional Impairment | |||
| Yes | 4.03 | 2.08 to 7.84 | <0.001 |
| No | 1 (ref) | — |
BMI = body mass index, CI = confidence interval, C&P = compensation and pension, OR = odds ratio, ref = reference.