. Author manuscript; available in PMC: 2011 Sep 1.

Published in final edited form as: Addict Behav. 2010 Apr 10;35(9):818–825. doi: 10.1016/j.addbeh.2010.03.021

Table 5.

Psychometric characteristics of the TWEAK in each country (current drinkers)

	Sensitivity -S-and Specificity -Sp- for alcohol dependence		Correlation with the AUDIT^a	TWEAK Mean and (S.D.)	TWEAK Reliability^b	Item p [Proportion of indicator presence]					Item discrimination index^c					Item discrimination index^d
	S %	Sp %	Correlation with the AUDIT^a	TWEAK Mean and (S.D.)	TWEAK Reliability^b	Item1	Item2	Item3	Item4	Item5	Item1	Item2	Item3	Item4	Item5	Item1	Item2	Item3	Item4	Item5
Arg (n=528)	98	67	.77^**	1.07 (1.55)	.53	.70	.16	.04	.04	.14	.35	.42	.39	.36	.48	.63	.51	.41	.36	.73
Mex (n=539)	90	98	.64^**	1.38 (1.32)	.68	.65	.18	.11	.11	.33	.27	.53	.46	.51	.50	.35	.50	.48	.45	.54
US (n=801)	91	81	.86^**	2.07(2.24)	.71	.94	.40	.16	.17	.40	.40	.61	.56	.57	.56	.41	.66	.54	.55	.63

Pearson correlation coefficients

^**

Significative at 0.01 (one-tailed).

Test reliability estimate by Kuder-Richardson-20 index.

Corrected Item-Test Point-Biserial Correlation.

D-Value.