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 | 100.00 (99.60, 100.0) | 0.84 (0.31, 1.82) | 1.01 (0.46, 2.24) | 0.00 | 100.84 | 56.61 (54.17, 59.03) |
≥3 | 99.89 (99.40, 100.0) | 1.96 (1.07, 3.26) | 1.02 (0.61, 1.71) | 0.06 (0.01, 0.43) | 101.85 | 57.04 (54.60, 59.45) |
≥4 | 99.78 (99.22, 99.97) | 3.36 (2.16, 4.95) | 1.03 (0.70, 1.53) | 0.06 (0.02, 0.24) | 103.14 | 57.59 (55.15, 60.00) |
≥5 | 99.78 (99.22, 99.97) | 7.69 (5.85, 9.90) | 1.08 (0.84, 1.39) | 0.03 (0.01, 0.12) | 107.47 | 59.49 (57.06, 61.88) |
≥6 | 99.02 (98.15, 99.55) | 16.78 (14.12, 19.73) | 1.19 (1.01, 1.40) | 0.06 (0.03, 0.12) | 115.8 | 63.04 (60.64, 65.38) |
≥7 | 96.95 (95.63, 97.97) | 29.37 (26.05, 32.86) | 1.37 (1.22, 1.54) | 0.10 (0.07, 0.14) | 126.32 | 67.38 (65.05, 69.65) |
≥8 | 91.40 (89.40, 93.14) | 41.82 (38.17, 45.53) | 1.57 (1.44, 1.72) | 0.21 (0.17, 0.26) | 133.22 | 69.71 (67.41, 71.93) |
≥9* | 76.71 (73.84, 79.41) | 65.03 (61.41, 68.53) | 2.19 (2.05, 2.34) | 0.36 (0.31, 0.42) | 141.74 | 71.60 (69.35, 73.78) |
≥10 | 54.84 (51.56, 58.09) | 83.64 (80.72, 86.27) | 3.35 (3.13, 3.58) | 0.54 (0.45, 0.65) | 138.48 | 67.44 (65.11, 69.71) |