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

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

Item Location Fit Residual χ2 Probability
1 −0.338 −2.592a 9.220 0.101
2 −0.292 −1.144 3.301 0.658
3 0.115 −2.670a 9.115 0.104
4 0.104 −2.747a 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 −2.614a 13.235 0.023
18 −0.263 −1.744 7.138 0.211
19 −0.091 −2.881a 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 4.217a 43.774 0.000b
25 0.978 3.859a 35.118 0.000b
26 0.529 1.770 15.103 0.009
27 0.395 7.145a 105.105 0.000b
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
  1. aItem fit residual greater than 2.5. Large negative residuals suggest item redundancy, large positive residuals
  2. bStatistically significant chi-square probability (Bonferonni-adjusted p = 0.0003)