Skip to main content

Table 5 AUDIT-C thresholds for higher risk drinking (male)

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)
  1. Drinking >50 units of alcohol in past week
  2. *The ‘optimal’ and most accurate AUDIT-C cut-off score for identifying higher risk drinkers
  3. aLR+ positive likelihood ratio
  4. bLR− negative likelihood ratio