Table 6 Optimal and most accurate AUDIT-C thresholds
From: Validation of the AUDIT-C in adults seeking help with their drinking online
Drinking category | Selected thresholds by sex, evaluations with and without optimism | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | LR+c (95% CI) | LR−d (95% CI) | Sensitivity + specificity | % Correctly classified (95% CI) | ||
|---|---|---|---|---|---|---|---|---|---|
Above weekly limitsa | Optimal | Female ≥8 | With optimism | 69.78 (67.64, 71.85) | 81.92 (75.45, 87.29) | 3.86 (3.58, 4.16) | 0.37 (0.27, 0.51) | 151.7 | 70.82 (68.80, 72.78) |
Optimism-adjusted | 76.33 (74.34, 78.24) | 72.88 (65.70, 79.28) | 2.81 (2.56, 3.08) | 0.32 (0.25, 0.41) | 149.21 | 76.04 (74.13, 77.87) | |||
Male ≥8 | With optimism | 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) | ||
Optimism-adjusted | 85.10 (83.16, 86.89) | 57.87 (50.25, 65.21) | 2.02 (1.78, 2.29) | 0.26 (0.21, 0.32) | 142.97 | 82.13 (80.18, 83.96) | |||
Most accurate | Female ≥4 | With optimism | 99.63 (99.23, 99.85) | 16.38 (11.26, 22.68) | 1.19 (0.85, 1.66) | 0.02 (0.01, 0.04) | 116.01 | 92.45 (91.22, 93.56) | |
Optimism-adjusted | 98.61 (97.98, 99.09) | 25.42 (19.19, 32.50) | 1.32 (1.03, 1.70) | 0.05 (0.03, 0.07) | 124.03 | 92.30 (91.07, 93.42) | |||
Male ≥5 | With optimism | 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) | ||
Optimism-adjusted | 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) | |||
Higher risk drinkingb | Optimal | Female ≥8 | With optimism | 81.90 (79.67, 83.97) | 61.90 (58.39, 65.33) | 2.15 (2.02, 2.28) | 0.29 (0.25, 0.34) | 143.80 | 74.33 (72.38, 76.21) |
Optimism-adjusted | 81.90 (79.67, 83.97) | 61.90 (58.39, 65.33) | 2.15 (2.02, 2.28) | 0.29 (0.25, 0.34) | 143.80 | 74.33 (72.38, 76.21) | |||
Male ≥9 | With optimism | 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) | ||
Optimism-adjusted | 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) | |||
Most accurate | Female ≥8 | With optimism | 81.90 (79.67, 83.97) | 61.90 (58.39, 65.33) | 2.15 (2.02, 2.28) | 0.29 (0.25, 0.34) | 143.80 | 74.33 (72.38, 76.21) | |
Optimism-adjusted | 81.90 (79.67, 83.97) | 61.90 (58.39, 65.33) | 2.15 (2.02, 2.28) | 0.29 (0.25, 0.34) | 143.80 | 74.33 (72.38, 76.21) | |||
Male ≥9 | With optimism | 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) | ||
Optimism-adjusted | 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) | |||