Table 2.

Performance of the AUDIT-C at different screening thresholds

AUDIT-C Cutoff	Sensitivity†	95% CI	Specificity†	95% CI
Male
2	0.99	0.97-1.00	0.83	0.79-0.87
3	0.98	0.96-1.00	0.90	0.87-0.93
4	0.95	0.92-0.98	0.94	0.92-0.96
5	0.84	0.78-0.90	1.00	1.00-1.00
6	0.72	0.65-0.79	1.00	1.00-1.00
7	0.61	0.53-0.68	1.00	1.00-1.00
Female
2	0.96	0.91-1.00	0.91	0.88-0.94
3	0.93	0.87-0.99	0.95	0.93-0.97
4	0.89	0.82-0.96	0.99	0.98-1.00
5	0.80	0.71-0.89	1.00	1.00-1.00
6	0.69	0.58-0.80	1.00	1.00-1.00
7	0.53	0.41-0.65	1.00	1.00-1.00

^†Sensitivity and specificity are calculated using the full AUDIT as a proxy gold standard