TABLE 6

ROC for the NIAAA 2-Question Screen When Predicting AUDIT Clinical Cutoff Score by Middle and High School Participants

GroupPredict AUDIT ≥4 if NIAAA risk is:Sensitivity (95% CI)Specificity (95% CI)PPV (95% CI)NPV (95% CI)AUC
Middle school age group≥ Nondrinker1.00 (1.00–1.00)0.00 (0.00–0.00)0.01 (0.01–0.02)0.86
≥ Moderate risk0.78 (0.63–0.94)0.92 (0.90–0.93)0.12 (0.07–0.17)1.00 (0.99–1.00)
≥ High risk0.34 (0.16–0.52)0.99 (0.99–1.00)0.41 (0.20–0.62)0.99 (0.99–0.99)
> High risk0.00 (0.00–0.00)1.00 (1.00–1.00)0.99 (0.98–0.99)
High school age group≥ Nondrinker1.00 (1.00–1.00)0.00 (0.00–0.00)0.12 (0.11–0.13)0.89
≥ Lower risk0.95 (0.93–0.97)0.74 (0.72–0.75)0.33 (0.30–0.36)0.99 (0.99–1.00)
≥ Moderate risk0.71 (0.66–0.76)0.86 (0.85–0.87)0.41 (0.37–0.45)0.96 (0.95–0.96)
≥ High risk0.36 (0.31–0.41)0.98 (0.98–0.99)0.74 (0.68–0.81)0.92 (0.91–0.93)
> High risk0.00 (0.00–0.00)1.00 (1.00–1.00)0.88 (0.87–0.89)
  • AUC, area under the curve; NPV, negative predictive value; PPV, positive predictive value.