Exploring the measurement properties of the osteopathy clinical teaching questionnaire using Rasch analysis

Table 2 Item fit statistics for the full 30-item Osteopathy Clinical Teaching Questionnaire

Item	Location	Fit Residual	χ²	Probability
1	−0.338	−2.592^a	9.220	0.101
2	−0.292	−1.144	3.301	0.658
3	0.115	−2.670^a	9.115	0.104
4	0.104	−2.747^a	11.628	0.040
5	−0.360	−0.501	5.967	0.309
6	−0.426	−1.513	7.659	0.176
7	0.063	−1.644	4.684	0.457
8	−0.056	1.023	5.296	0.381
9	−0.129	−1.866	7.391	0.193
10	−0.117	0.085	3.599	0.608
11	−0.272	−2.476	10.194	0.070
12	0.167	−1.909	10.186	0.070
13	−0.079	−2.155	17.007	0.005
14	−0.205	−1.581	4.161	0.526
15	0.092	1.082	4.790	0.442
16	−0.244	−1.347	2.679	0.749
17	−0.101	−2.614^a	13.235	0.023
18	−0.263	−1.744	7.138	0.211
19	−0.091	−2.881^a	14.378	0.014
20	−0.090	0.885	5.992	0.307
21	0.358	0.662	7.751	0.170
22	0.778	0.357	10.095	0.072
23	0.268	−0.109	8.925	0.112
24	0.467	4.217^a	43.774	0.000^b
25	0.978	3.859^a	35.118	0.000^b
26	0.529	1.770	15.103	0.009
27	0.395	7.145^a	105.105	0.000^b
28	−0.412	0.477	2.452	0.783
29	−0.327	1.384	15.011	0.010
30	−0.511	−1.280	6.476	0.262

^aItem fit residual greater than 2.5. Large negative residuals suggest item redundancy, large positive residuals
^bStatistically significant chi-square probability (Bonferonni-adjusted p = 0.0003)

ISSN: 2045-709X