Skip to main content

Table 1 Research protocol feasibility and acceptability outcomes

From: A feasibility study on yoga’s mechanism of action for chronic low back pain: psychological and neurophysiological changes, including global gene expression and DNA methylation, following a yoga intervention for chronic low back pain

Feasibility outcomes
Recruitment The goal was to recruit 10 participants over a 2-week period who were willing to commit to the intervention schedule. The screen-to-enroll ratio was determined, which will be used to estimate the number of volunteers needed to screen for a full-scale trial to achieve the desired sample size
Adherence The goal was for all participants to complete at least 8 out of the 12 intervention sessions (≥ 65%) and the homework, which was based on a prior large-scale trial.30
Retention The goal was to retain 80% of participants and complete all outcome assessments within 1 week of the participant’s last session. The retention rate was determined and will inform the attrition estimation and plan for over-sampling in the full-scale trial
Acceptability outcomes
 Participant experience with the study We conducted quantitative and qualitative assessments of the participant experience with the intervention and research protocol to assess the need for modifications. Participants were asked what they liked and did not like about the intervention and research protocol, what if anything they noticed changed during the intervention, and what they would change about the intervention or research protocol in the future
 Participant satisfaction Participants completed a satisfaction questionnaire after they completed the study