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Table 4 Results of linear models based on Poisson distribution for the primary outcome variable chronic pain grade severity according to CPGS (Korff) at post treatment (t2), and secondary outcomes (leg length difference, Schober sign, finger to floor distance) baseline values entered as covariates

From: Assessment of a taping method combined with manual therapy as a treatment of non-specific chronic low back pain – a randomized controlled trial

Variable Effect Wald Chi2 df p-value Estimate Conf Int low Conf Int high Rate Ratio
CPGS group 0.20 1 .64 −0.03 −0.18 0.11 0.97
group x center 0.04 1 .83 0.015 −0.13 0.16 1.01
LLD group 0.75 1 .38 0.047 −0.059 0.154 1.048
group x center 6.29 1 .012 0.136 0.03 0.24 1.145
Schober group 0.09 1 .76 0.007 −0.04 0.05 1.007
group x center 0.12 1 .72 −0.009 −0.06 0.04 0.991
FTF group 45.97 1 <.00001 0.258 0.18 0.33 1.29
group x center 10.02 1 .0015 0.115 0.044 0.187 1.12
  1. CPGS Korff Pain Grading Scale, LLD leg length difference, FTF finger to  floor distance