Table 1.

An Example of the OR Method Where Items 8, 9, and 10 of the 10 Items Favor the Reference Group.

Items	Reference group		Focal group		OR statistics
	Success	Fail	Success	Fail	${\hat{\lambda }}_i$	$\sigma ({\hat{\lambda }}_i)$	${\hat{\lambda }}_i\pm z_{\alpha /2}\times \sigma ({\hat{\lambda }}_i)$
1	21	79	28	72	−0.380	0.331	−1.029, 0.269
2	28	72	28	72	0.000	0.315	−0.617, 0.617
3	74	26	80	20	−0.340	0.338	−1.002, 0.322
4	52	48	63	37	−0.452	0.288	−1.016, 0.112
5	18	82	13	87	0.385	0.395	−0.389, 1.159
6	33	67	35	65	−0.089	0.299	−0.675, 0.497
7	35	65	34	66	0.044	0.298	−0.540, 0.628
8	42	58	12	88	1.670	0.368	0.948, 2.392
9	71	29	52	48	0.851	0.298	0.232, 1.399
10	58	42	16	84	1.981	0.340	1.315, 2.647

Note. α = .05. OR = odds ratio.