Strengths and limitations
pain
CHRONIC PAIN
This qualitative study used semi-structured face-to-face interviews that allowed the informants to speak freely about their experiences. This provided the opportunity to explore in-depth experiences, arising in another way than in a quantitative study. The interviews were conducted only three months after the interventions, which made it possible for the informants to recall elements from the interventions and whether participating in one of the interventions had any influence on how they self-managed their pain. The data analysis and the results were thoroughly discussed among all the authors. The first author transcribed the interviews, the last author listened to the recordings, and all authors collaborated in analysing the data. Two of the authors were also involved in conducting the RCT which this study was nested within. However, some limitations should be considered. The informants were recruited from two interventions offered at a Healthy Life Centre in a major city in Norway, which is not necessarily representative of all primary healthcare services elsewhere. Anyhow, the sample in this study reflects the population with chronic pain, as there were more women than men in our sample [