Table 3

Estimations of treatment effectiveness at end of treatment, 3 and 24 months post-treatment calculated from longitudinal model (adjusted ORs*, 95% CIs and p values)

End of treatment3 months post-treatment24 months post-treatmentChange in OR/month
tCBT5.04.83.60.99
(2.4 to 10.6)(2.4 to 9.7)(1.7 to 7.6)(0.95 to 1.02)
<0.001<0.0010.0010.410
Exercise4.64.32.50.98
(2.2 to 9.6)(2.1 to 8.5)(1.2 to 5.4)(0.94 to 1.01)
<0.001<0.0010.0150.147
Combined treatment6.76.02.90.96
(3.3 to 13.9)(3.1 to 11.9)(1.4 to 6.0)(0.93 to 0.997)
<0.001<0.0010.0060.035
  • *Results of the four-group longitudinal logistic regression model, adjusting for age, sex, centre, and baseline CPG and GHQ scores, including a term for treatment–time interaction.

  • CPG, Chronic Pain Grade questionnaire; GHQ, General Health Questionnaire; tCBT, telephone cognitive behavioural therapy.