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Table 5 Multivariable regression of change in NASS pain+disability scores between baseline and the 6-month follow-up (n = 82)

From: Prognostic factors for the improvement of pain and disability following multidisciplinary rehabilitation in patients with chronic neck pain

Covariate Change R2 Change F-value Regression coefficient 95% CI p-value Bivariate correlation Partial correlation
Constant    −1.658 (−2.821 to 0.495) 0.006   
NASS pain+disability baseline 0.120 1.964 0.261 (0.132 to 0.390) < 0.001 0.248 0.364
SF-36 mental health, change 0.076 1.133 0.011 (0.004 to 0.018) 0.002 0.232 0.297
Active ROM,* change 0.051 0.613 0.004 (0.001 to 0.008) 0.011 0.173 0.247
Active ROM,* baseline 0.034 0.249 0.002 (0.000 to 0.005) 0.037 −0.020 0.204
SF-36 mental health, baseline 0.026 0.075 0.005 (0.000 to 0.010) 0.066 −0.077 0.180
Age 0.014 −0.195 0.006 (−0.002 to 0.014) 0.172 −0.012 0.134
Sex (0 = female; 1 = male) 0.007 −0.363 0.086 (−0.087 to 0.259) 0.331 0.072 0.096
Education 0.002 −0.494 −0.016 (− 0.082 to 0.050) 0.632 − 0.043 −0.047
Model total 0.213 3.483    0.001   
  1. * Active ROM: sum of the range-of-motion of cervical lateral flexion (both sides), cervical rotation (both sides), neck flexion, and neck extension. The change in active ROM refers to the change between baseline and discharge, as no mobility was measured after 6 months. Positive regression coefficients for change scores represent positive associations. NASS: North American Spine Society questionnaire; SF-36: Short Form 36 questionnaire
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