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Table 2 Fit of the items in the subscales of the precontemplation (A), contemplation (B), action (C) and maintenance (D) subscale according to the Rasch analysis (n = 231)

From: Psychometric properties of the pain stages of change questionnaire as evaluated by rasch analysis in patients with chronic musculoskeletal pain

Item Content Location SE Residual χ2 Prob,.
A. Precontemplation
I 11 I have tried everything that people recommended… -0.39 0.07 1.47 2.54 0.47
I 16 Everyone I speak with tells me I have to learn.. 0.06 0.07 0.35 3.93 0.27
I 25 Why can’t someone just do something.. -0.35 0.06 -0.66 6.60 0.09
I 29 I have been wondering if there is something I.. 0.68 0.08 1.44 3.41 0.33
Bonferroni corrected significance level 0.01
B. Contemplation
I 1 I have been thinking that the way I cope with my pain.. 0.26 0.09 0.99 2.61 0.46
I 7 I have recently realised that there is no medical cure… 0.29 0.09 1.06 0.38 0.94
I 8 Even though my pain is not going away…, -0.80 0.09 -1.47 7.06 0.07
I 14 I am beginning to wonder if I need some help.. 0.38 0.09 1.12 0.73 0.87
I 19 All this talk about how to cope better.. 0.51 0.09 0.54 0.09 0.99
I 28 I have been wondering if there is something I.. -0.65 0.10 0.06 1.28 0.73
Bonferroni corrected significance level 0.008
C. Action
I 2 I am developing new ways to cope with my pain -0.52 0.09 -1.11 4.74 0.19
I 6 I have started to come up with some strategies.. -0.40 0.09 -0.10 3.54 0.32
I 20 I am getting help learning some strategies for.. 0.82 0.09 2.19 2.41 0.49
I 26 I am learning to help myself controlling my pain without.. 0.16 0.08 1.32 1.43 0.70
I 27 I am testing out some coping skills to manage.. 0.05 0.08 -0.40 6.06 0.11
I 30 I am learning ways to control my pain without.., -0.03 0.07 0.55 1.71 0.63
Bonferroni corrected significance level 0.008
D. Maintenance
I 3 I have learned some good ways to keep my pain 0.30 0.09 1.27 0.24 0.97
I 4 When my pain flares up I find myself automatically.. 0.16 0.08 0.73 1.09 0.78
I 5 I use some strategies that help me better deal with.. -0.36 0.10 -1.13 6.20 0.10
I 10 I use what I have learned to keep my pain.. -0.56 0.10 0.64 0.43 0.93
I 17 I have incorporated techniques.. -0.28 0.10 -1.87 1.35 0.72
I 18 I have made a lot of progress in coping with my pain 0.74 0.09 1.05 1.09 0.78
Bonferroni corrected significance level 0.008