Baseline characteristics of participants in the European American and African American MVC studies
| Characteristic | European American | African American | |||
|---|---|---|---|---|---|
| Genotyping | Genotyping | mRNA | Micro RNA | Cortisol | |
| Enrolled, n | 948 | 930 | 96 | 172 | 80 |
| Age, years, mean (SD) | 35.6 (13.3) | 35.1 (12.7) | 30.5 (10.3) | 34.6 (11.8) | 32.3 (10.4) |
| Females, n (%) | 575 (60.7) | 578 (62.2) | 66 (68.8) | 107 (62.2) | 48 (60.0) |
| Education, n (%) | |||||
| 8–11 years | 42 (4.4) | 71 (7.6) | 2 (2.0) | 10 (5.8) | 11 (13.8) |
| High school | 184 (19.4) | 290 (31.2) | 31 (32.3) | 48 (27.9) | 29 (36.3) |
| Post-high school | 57 (6.0) | 42 (4.5) | 3 (3.1) | 5 (2.9) | 5 (6.3) |
| Some college | 312 (32.9) | 338 (36.3) | 42 (43.8) | 77 (44.8) | 25 (31.3) |
| College graduate | 238 (25.1) | 137 (14.7) | 15 (15.6) | 25 (14.5) | 7 (8.8) |
| Post-graduate studies | 113 (11.9) | 36 (3.9) | 3 (3.1) | 6 (3.5) | 3 (3.8) |
| Overall pain severity, 0–10 NRS, mean (SD) | |||||
| Month prior to MVC | 1.6 (2.6) | 2.2 (3.3) | 1.1 (2.4) | 1.6 (2.9) | 1.9 (3.2) |
| ED | 5.5 (2.4) | 7.2 (2.1) | 7.1 (2.2) | 7.2 (2.1) | 7.4 (1.8) |
| Week 6 | 3.8 (2.8) | 6.0 (2.9) | 4.8 (4.1) | 5.5 (3.4) | 6.2 (2.5) |
| Peritraumatic distress in the ED, mean (SD) | 19.2 (9.9) | 22.2 (11.6) | 24.3 (11.6) | 23.3 (11.5) | 23.5 (11.5) |
NRS, Numeric rating scale.