Table 1. Baseline demographic and clinical characteristics of study population by response status at 1 year.
| Characteristic | Total (N=213) | Responders (N=133) | Non-Responders (N=80) | p-value |
|---|---|---|---|---|
| Age, Mean (SD) | 43.9 (15.7) | 45.6 (14.9) | 41.4 (16.5) | 0.05 |
| Sex, N (%) | 0.16 | |||
| Female | 93 (44%) | 63 (47%) | 30 (37%) | |
| Male | 120 (56%) | 70 (53%) | 50 (63%) | |
| Race, N (%) | 0.19 | |||
| White | 198 (93%) | 126 (95%) | 72 (90%) | |
| Black | 15 (7%) | 7 (5%) | 8 (10%) | |
| Education, N (%) | 0.79 | |||
| ≤ High School | 112 (53%) | 69 (52%) | 43 (54%) | |
| > High School | 101 (47%) | 64 (48%) | 37 (46%) | |
| Marital Status, N (%) | 0.27 | |||
| Married | 109 (51%) | 72 (54%) | 37 (46%) | |
| Single | 104 (49%) | 61 (46%) | 43 (54%) | |
| Preinjury Employment, N (%) | 0.71 | |||
| No | 103 (48%) | 63 (47%) | 40 (50%) | |
| Yes | 110 (52%) | 70 (53%) | 40 (50%) | |
| Insurance, N (%) | 0.96 | |||
| Private | 119 (56%) | 74 (56%) | 45 (56%) | |
| Public | 44 (21%) | 27 (20%) | 17 (21%) | |
| None | 50 (23%) | 32 (24%) | 18 (23%) | |
| Comorbid Conditions, N (%) | 0.84 | |||
| None | 101 (47%) | 61 (46%) | 40 (50%) | |
| 1 | 54 (26%) | 35 (26%) | 19 (24%) | |
| > 1 | 58 (27%) | 37 (28%) | 21 (26%) | |
| Preinjury Psychological Condition, N (%) | 0.23 | |||
| No | 159 (75%) | 103 (77%) | 56 (70%) | |
| Yes | 54 (25%) | 30 (23%) | 24 (30%) | |
| BMI Category, N (%) | 0.45 | |||
| Normal Weight | 59 (28%) | 40 (30%) | 19 (24%) | |
| Overweight | 75 (35%) | 43 (32%) | 32 (40%) | |
| Obese | 79 (37%) | 50 (38%) | 29 (36%) | |
| Multiple Injuries, N (%) | 0.61 | |||
| No | 161 (76%) | 99 (74%) | 62 (78%) | |
| Yes | 52 (24%) | 34 (26%) | 18 (22%) | |
| Surgery Type, N (%) | 0.57 | |||
| Acute Trauma | 132 (62%) | 79 (59%) | 53 (66%) | |
| Revision Surgery | 65 (31%) | 44 (33%) | 21 (26%) | |
| Infection | 16 (7%) | 10 (8%) | 6 (8%) | |
| Mechanism of Injury, N (%) | 0.17 | |||
| Motor vehicle | 124 (58%) | 72 (54%) | 52 (65%) | |
| Fall/Falling Object | 70 (33%) | 50 (38%) | 20 (25%) | |
| Blunt/Penetrating | 19 (9%) | 11 (8%) | 8 (10%) | |
| ISS, Mean (SD) | 11.0 (7.7) | 11.1 (7.8) | 10.8 (7.7) | 0.82 |
| Hospital LOS, Mean (SD) | 4.8 (4.0) | 4.8 (4.5) | 4.9 (3.3) | 0.81 |
BMI = body mass index; ISS = injury severity score; LOS = length of stay