Table 1.

Performance of the AUD-C in detecting alcohol use disorder among patients in routine care^* (N=1 214)

Cut-point	Sensitivity (%)	Specificity (%)	Correctly classified (%)	LR+	LR−
≥0	100	0	1.41	1.00	0.00
≥1	100	67.62	68.08	3.09	0.00
≥2	100	71.15	71.56	3.47	0.00
≥3	100	76.20	76.53	4.20	0.00
≥4	82.35	82.51	82.50	4.71	0.21
≥5	64.71	88.14	87.81	5.46	0.40
≥6	58.82	91.93	91.46	7.29	0.45
≥7	41.18	94.62	93.86	7.65	0.62
≥8	35.29	96.55	95.69	10.23	0.67
≥9	29.41	97.98	97.01	14.57	0.72
≥10	17.65	98.82	97.68	14.99	0.83
≥11	11.76	99.50	98.26	23.31	0.89
≥12	5.88	99.92	98.59	69.95	0.94
>12	0	100	98.59	1.00	1.00

AUD-C = Alcohol Use Disorders Identification Test; LR+ = likelihood ratio positive; LR− = likelihood ratio negative.

^*Adult Primary Care assessment by the primary healthcare nurse was used as a diagnostic reference standard.