Table 3.
Analysis of joint effects of BAC and AA/AD on subject characteristics (n = 339).
| BAC+ | BAC− | Factor p-values | |||||
|---|---|---|---|---|---|---|---|
| AA/AD + n = 89 | AA/AD − n = 30 | AA/AD + n = 43 | AA/AD − n = 177 | BAC | AA/AD | Interaction | |
| age (SD) | 30.5 (9.6) | 33.6 (12.8) | 37.4 (15.8) | 39.1 (18.2) | 0.004 | NS | NS |
| TAD score (SD) | 5.7 (1.3) | 5.6 (1.6) | 5.5 (1.4) | 5.5 (1.5) | NS | NS | NS |
| ISS (SD) | 10.1 (8.4) | 10.3 (12.7) | 10.6 (8.0) | 10.2 (9.4) | NS | NS | NS |
| GCS (SD) | 13.8 (2.63) | 13.8 (2.87) | 14.9 (0.35) | 14.5 (1.55) | 0.001 | NS | NS |
| # drinks needed for effect (SD) | 4.0 (2.9) | 3.1 (2.0) | 3.1 (5.0) | 1.8 (1.6) | <.001 | 0.005 | NS |
| # drinks per week, current (SD) | 19.3 (26.9) | 3.9 (3.9) | 3.1 (5.7) | 1.1 (2.2) | <.001 | <.001 | 0.001 |
| max number of drinks (SD) | 14.3 (7.1) | 8.2 (4.5) | 5.8 (8.6) | 3.1 (4.2) | <.001 | <.001 | 0.06 |
| MCV>95 (%) | 9 (11%) | 1 (3.7%) | 1 (2.4%) | 7 (4.2%) | NS | NS | NS |
| GGT>85 (%) | 9 (14%) | 1 (4.2%) | 4 (11%) | 5 (4.1%) | NS | NS | NS |
SD = standard deviation.
ISS = Injury Severity Score, GCS = Glasgow Coma Score, AA/AD = Alcohol abuse/alcohol dependence, MCV = mean corpuscular volume, GGT = gammaglutamyl transferase, NS = not significant.
% = Proportion within BAC:AA/AD group.