Table 5 Comparison of MPI-S scales for the four samples. Statistical significance for overall group differences and for group-wise comparisons with the chiropractic primary care population as reference, using Dunnett’s t-test
Scale | Samples | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
A (primary care, Chiropractic) (n = 361) | B (primary care, sick listed with risk of chronicity) (n = 128) | C (secondary care, multimodal single-center) (n = 253) | D (secondary care, multimodal multi-center) (n = 212) | Overall group differences | ||||||||
Mean | SD | Mean | SD | p | Mean | SD | p | Mean | SD | p | p | |
PS | 3.40 | 1.23 | 2.81 | 1.33 | <0.001 | 3.58 | 1.15 | 0.187 | 3.69 | 1.13 | 0.015 | <0.001 |
I | 2.91 | 1.37 | 2.50 | 1.34 | 0.003 | 3.82 | 1.10 | <0.001 | 3.80 | 0.97 | <0.001 | <0.001 |
LC | 3.37 | 1.16 | 3.84 | 1.09 | <0.001 | 3.20 | 1.13 | 0.201 | 3.14 | 1.22 | 0.063 | <0.001 |
AD | 2.68 | 1.41 | 2.31 | 1.39 | 0.041 | 2.66 | 1.59 | 0.997 | 2.80 | 1.45 | 0.671 | 0.025 |
S | 4.11 | 1.62 | 4.23 | 1.63 | 0.814 | 4.69 | 1.38 | <0.001 | 4.46 | 1.58 | 0.030 | <0.001 |
PR | 0.87 | 1.14 | 1.27 | 1.33 | 0.005 | 1.08 | 1.21 | 0.100 | 1.14 | 1.30 | 0.033 | 0.005 |
SR | 2.78 | 1.49 | 2.89 | 1.43 | 0.754 | 3.17 | 1.00 | 0.001 | 3.08 | 1.05 | 0.020 | 0.001 |
DR | 2.84 | 1.47 | 2.98 | 1.57 | 0.738 | 3.14 | 1.62 | 0.062 | 3.18 | 1.62 | 0.033 | 0.038 |