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. 2021 Jul 2;25(9):2020–2038. doi: 10.1002/ejp.1818

TABLE 3.

Mean change and differences on secondary outcomes at 3 and 12 months

All participants Low‐risk participants Medium‐risk participants High‐risk participants
95% CI p‐value 95% CI p‐value 95% CI p‐value 95% CI p‐value
Intervention group 169 53 52 64
Control group 164 51 51 62
3 months
Back Pain
Intervention group (SD) 2.45 2.69 1.98 2.69 2.44 2.44 3.00 2.86
Control group (SD) 2.74 2.71 2.36 2.45 2.50 2.81 3.35 2.78
Mean difference 0.16 −0.46 0.78 .62 0.44 −0.70 1.59 .44 −0.03 −1.28 1.22 .97 0.41 −1.04 1.86 .57
Leg Pain
Intervention group (SD) 1.13 2.47 0.02 1.26 1.85 2.66 1.73 2.89
Control group (SD) 1.43 2.53 0.89 1.79 1.26 2.56 2.11 2.96
Mean difference 0.34 −0.52 1.21 .43 0.91 0.13 1.68 .02 −1.01 −2.28 0.26 .11 1.43 −0.16 3.02 .08
Disturbed Sleep
Intervention group (SD) 2.28 2.85 1.47 2.83 2.49 2.69 3.05 2.81
Control group (SD) 2.43 3.33 2.18 2.42 1.96 4.04 3.13 3.25
Mean difference 0.30 −0.58 1.17 .50 0.73 −0.45 1.91 .22 −0.94 −3.04 1.15 .37 1.37 −0.03 2.77 .05
WHO5 Well‐being
Intervention group (SD) −15.12 20.58 −9.91 18.79 −15.89 14.95 −20.29 25.29
Control group (SD) −15.11 21.14 −11.26 16.29 −16.45 21.28 −17.55 24.83
Mean difference −1.25 −6.48 3.98 .63 −2.71 −9.37 3.94 .41 −1.45 −9.42 6.51 .71 1.21 −13.74 16.17 .87
12 months
Back Pain
Intervention group (SD) 2.75 2.61 2.08 2.27 2.94 2.55 3.26 2.88
Control group (SD) 2.51 2.96 2.11 2.46 1.82 2.99 3.67 3.14
Mean difference −0.45 −1.24 0.34 .26 −0.17 −1.32 0.98 .77 −1.21 −3.12 0.70 .21 0.13 −1.26 1.51 .85
Leg Pain
Intervention group (SD) 1.40 2.96 0.15 1.76 1.81 3.08 2.28 3.42
Control group (SD) 1.26 2.85 0.45 1.93 0.87 3.31 2.53 2.78
Mean difference −0.16 −1.06 0.74 .73 0.16 −0.88 1.20 .76 −1.03 −2.56 0.51 .18 0.45 −1.14 2.04 .57
Disturbed Sleep
Intervention group (SD) 2.22 3.17 1.38 2.55 2.35 3.80 2.95 3.01
Control group (SD) 2.47 3.65 2.18 2.81 1.94 4.60 3.31 3.32
Mean difference 0.16 −0.88 1.21 .76 0.65 −0.72 2.01 .34 −0.99 −3.27 1.29 .38 0.71 −0.84 2.25 .36
WHO5 Well‐being
Intervention group (SD) −16.18 18.05 −11.47 15.76 −15.52 15.26 −21.47 21.20
Control group (SD) −14.72 22.49 −7.16 16.85 −10.56 23.01 −27.20 22.58
Mean difference 1.93 −3.47 7.34 .48 4.97 −0.68 10.62 .08 4.98 −4.59 14.55 .30 −4.37 −15.79 7.05 .44