Table.
Case Definition | Median grams ethanol in cases (range) [interquartile range] | Median grams ethanol in non-cases* (range) [interquartile range] | PEth concentration at 95% specificity | Sensitivity at 95% specificity | Area under the ROC curve (95% CI) |
---|---|---|---|---|---|
> 1 Drink per Day (n=64) | 355 (205-1,378) [250-603] | 134 (17-196) [93-152] | 45 ng/mL | 61 % | 0.77 (0.66 to 0.88) |
>2 Drinks per Day (n=28) | 619 (397-1,378) [520-807] | 231 (17-389) [184-310] | 127 ng/mL | 32% | 0.80 (0.70 to 0.90) |
“Non-cases” included all subjects drinking below the case threshold (e.g., non-cases for the heaviest drinking category included all subjects averaging less than or equal to 2 drinks per day). “Grams ethanol” refers to the 2 weeks preceding blood collection.