Table II.
Sensitivity for self reported alcohol use measures vs. blood PEth level
| Subjective Alcohol Us Measures | PEth Results (>8 ng/mL) | AUROCa (95% CI) | Peth Results (>20 ng/mL) | AUROCa (95% CI) | ||
|---|---|---|---|---|---|---|
| Positive N=74 (86%) | Negative N=12 (14%) | Positive N=53 (62%) | Negative N=33 (38%) | |||
| AUDIT Score | ||||||
| ≥8 | 20 (27%)b | 1 (9%) | 0.56 (0.49–0.62) | 15 (29%)b | 6 (19%) | 0.56 (0.45–0.68) |
| <8 | 51 (73%) | 9 (91%)c | 37 (71%) | 26 (81%)c | ||
| AUDIT-C Score | ||||||
| ≥4 | 46 (63%)b | 4 (36%) | 0.56 (0.48–0.64) | 35 (67%)b | 15 (47%) | 0.60 (0.49–0.71) |
| <4 | 27 (37%) | 7 (63%)c | 17 (32%) | 17 (53%)c | ||
| Binge in last two weeks | ||||||
| Yes | 52 (71%)b | 4 (36%) | 0.60 (0.50–0.68) | 37 (71%)b | 19 (59%) | 0.56 (0.45–0.68) |
| No | 21 (29%) | 7 (64%)c | 15 (29%) | 13 (41%)c | ||
| CAGE Screen | ||||||
| Positive | 1 (1%)b | 0 (0%) | 0.57 (0.50–0.80) | 1 (2%)b | 0 (0%) | 0.69 (0.46–0.63) |
| Negative | 73 (99%) | 12 (100%)c | 52 (98%) | 33 (100%)c | ||
a
Area under the receiver operating characteristic
b
Sensitivity
c
Specificity