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Table 2 Continuation criteria which indicate whether to proceed with a randomised controlled trial

From: Supporting prescribing in Irish primary care: protocol for a non-randomised pilot study of a general practice pharmacist (GPP) intervention to optimise prescribing in primary care

Proceed with RCT Proceed with RCT following some changes to the protocol Do not proceed with RCT unless problems can be overcome
Recruitment of 4 general practices within 3 months Recruitment of 4 general practices within 3–6 months Unable to recruit 4 general practices within 6 months
Retention of ≥ 3 general practices throughout 6-month intervention period Retention of 2 general practices throughout 6-month intervention period Retention of < 2 general practices throughout 6-month intervention period
Recruitment of 3 pharmacists within 3 months Recruitment of 3 pharmacists within 3–6 months Unable to recruit 3 pharmacists within 6 months
Retention of ≥ 2 pharmacists throughout 6-month intervention period Retention of 1 pharmacist throughout 6-month intervention period Retention of 0 pharmacists throughout 6-month intervention period
Recruitment of 50 PROM study patients from each practice Recruitment of 25–49 PROM study patients from each practice Recruitment of < 25 PROM study patients from each practice
Retention of ≥ 35 PROM study patients for follow-up Retention of 25–34 PROM study patients for follow-up Retention of < 25 PROM study patients for follow-up
GPP intervention acceptable to ≥ 75% GPs, pharmacists and patients involved GPP intervention acceptable to 50–74% GPs, pharmacists and patients involved GPP intervention acceptable to < 50% GPs, pharmacists and patients involved
Delivery of GPP intervention feasible Delivery of GPP intervention partially feasible Delivery of GPP intervention not feasible
GPP intervention demonstrates cost savings which outweigh the cost of implementing the intervention GPP intervention demonstrates potential for cost savings which outweigh the cost of implementing the intervention GPP intervention does not demonstrate potential cost savings which outweigh the cost of implementing the intervention
  1. GP general practitioners, GPP general practice pharmacist, PROM Patient Reported Outcome Measures, RCT randomised controlled trial