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The aim of this study is to investigate the effects of the extended 30‐month follow‐up of an original trial (NCT00600197) which has been published in the Clinical Journal of Pain.

Seventy‐four percent (146/197) of the participants who had taken part in the original study, including 69 patients in the intervention group and 77 patients in the control group, were followed up to 30 months after intervention. The intervention group continued receiving monthly motivational consultation and booster classes plus oral medication but the other group received just medication. Data on measures from the Short Form 36 (SF‐36), Quebec Disability Scale (QDS) and Ronald Morris Disability Questionnaire (RDQ) were collected at 3‐, 6‐, 12‐, 18‐, 24‐ and 30‐month follow‐ups and analyzed through repeated measures analysis of variance.

The two groups were comparable regarding all baseline …