From: Validation of the AUDIT-C in adults seeking help with their drinking online
AUDIT-C score | Sensitivity  % (95% CI) | Specificity  % (95% CI) | LR+a (95% CI) | LR−b (95% CI) | Sensitivity + specificity | % Correctly classified (95% CI) |
---|---|---|---|---|---|---|
≥2 | 99.93 (99.62, 100.0) | 2.81 (0.92, 6.43) | 1.03 (0.43, 2.44) | 0.02 (0.00, 0.14) | 102.74 | 89.35 (87.75, 90.81) |
≥3 | 99.86 (99.50, 99.98) | 7.30 (3.95, 12.17) | 1.08 (0.64, 1.82) | 0.02 (0.01, 0.08) | 107.16 | 89.78 (88.21, 91.21) |
≥4 | 99.66 (99.20, 99.89) | 11.80 (7.45, 17.47) | 1.13 (0.76, 1.69) | 0.03 (0.01, 0.07) | 111.46 | 90.09 (88.53, 91.49) |
≥5* | 99.18 (98.56, 99.57) | 25.28 (19.08, 32.33) | 1.33 (1.03, 1.71) | 0.03 (0.02, 0.05) | 124.46 | 91.13 (89.64, 92.46) |
≥6 | 96.09 (94.96, 97.02) | 40.45 (33.17, 48.05) | 1.61 (1.35, 1.92) | 0.10 (0.08, 0.13) | 136.54 | 90.02 (88.47, 91.44) |
≥7 | 90.25 (88.61, 91.72) | 53.93 (46.32, 61.42) | 1.96 (1.71, 2.25) | 0.18 (0.14, 0.22) | 144.18 | 86.29 (84.53, 87.92) |
≥8** | 82.14 (80.08, 84.08) | 66.29 (58.84, 73.19) | 2.44 (2.19, 2.72) | 0.27 (0.21, 0.34) | 148.43 | 80.42 (78.41, 82.31) |
≥9 | 63.19 (60.65, 65.67) | 80.34 (73.73, 85.91) | 3.21 (2.96, 3.49) | 0.46 (0.34, 0.62) | 143.53 | 65.06 (62.69, 67.37) |
≥10 | 41.21 (38.67, 43.79) | 88.20 (82.53, 92.55) | 3.49 (3.22, 3.79) | 0.67 (0.45, 1.00) | 129.41 | 46.33 (43.89, 48.78) |