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Table 5 Feasibility criteria

From: Effects of an e-learning programme on osteopaths’ back pain attitudes: a mixed methods feasibility study

  A priori feasibility criteria Feasibility threshold met? Considerations for future trial
Recruitment strategies feasibility Journals agreeing to publish the recruitment ad for free (a) Both professional journals accepted It is not possible to provide an accurate recruitment rate as some of the advertising media contacted osteopaths indirectly and so the denominator is unknown.
Regional groups accepting to forward messages to their members All regional groups accepted
National Council for Osteopathic Research (NCOR) accepting to inform their members about the research project (a) NCOR informed their members and mentioned the study when doing talks to regional groups
Ads published on time (a) Journal ads were published on time for readers to have time to contact the PI if interested to have more information
Gaining access to GOsC members’ email addresses who accepted to be contacted for research purpose (a) Access to 1000 email addresses was granted by the PI’s institution
Mail Merge system allowing to do mass emailing (a) 1000 emails were sent with no issue with the system
Recruitment and retention feasibility Recruiting 50 participants (a) Only 45 were recruited. As only 43 met the eligibility criteria, two with 14 years in practice were included. • Reassess eligibility criteria owing to their strictness
• Consider recruiting other Allied Health Practitioners with similar scope of practice
• Consider having a longer recruitment period (12 prospects contacted the PI within the following 4 months).
Enough participants accepting to be interviewed to reach data saturation (b) 10 participants agreed to be interviewed, 9 were needed to reach data saturation.  
Participants sending back consent forms (a, b) Consent forms were received from all participants  
Reaching an 80% retention rate (a, b) 91% (41/45) for the Quant strand, and 90% for Qual strand (9/10) High retention rate achieved by sending reminders to participants: up to seven reminders per participant when not accessing the e-learning
Data collection feasibility Receiving questionnaires back from participants (a) Post-intervention questionnaires were completed by 43 participants (96%): 2 participants in intervention group did not complete the course (details in text below) nor questionnaires despite invitation. All control group participants completed the questionnaires  
To send questionnaires in a format easy to access and fill in by all participants (a) Questionnaires sent in Word© were protected to ensure participants could not change the content of the questionnaires. This led to compatibility problems. Alternative systems should be considered.
Using voice-over-IP service successfully (b) Yes  
Being able to record the interviews (b) One recording was faulty. Field notes were used to write up a transcript that the interviewee checked within three hours of the interview. No excerpts were used from this interview.  
Interview guide suitable (b) Provided useful content and was well accepted by participants  
Participants agreeing to fill in questionnaires (a) Participants accepted the questionnaires well. Some were surprised about the similarities of the questions across the two validated measures included. Consider using only one of the two attitudinal questionnaires.
Control group accepting to fill in questionnaires twice before taking the course, 6 weeks apart (a) All sent back the completed questionnaires  
Suitability of the reflexive iterative process of data management (b) The process was feasible and satisfactory and was well accepted.  
Acceptability and feasibility of the outcome measures Suitability of attitudinal questionnaires (a) Some participants expressed their surprise about the similarities of the questions across the two validated measures included  
Threshold met Threshold partly met Threshold not met  
  1. a Quant strand, b Qual strand