PMID- 29027301 OWN - NLM STAT- MEDLINE DCOM- 20190916 LR - 20191210 IS - 1099-1557 (Electronic) IS - 1053-8569 (Linking) VI - 27 IP - 5 DP - 2018 May TI - Challenges of post-authorization safety studies: Lessons learned and results of a French study of fentanyl buccal tablet. PG - 457-463 LID - 10.1002/pds.4331 [doi] AB - PURPOSE: Recruiting and retaining participants in real-world studies that collect primary data are challenging. This article illustrates these challenges using a post-authorization safety study (PASS) to assess adverse events (AEs) experienced with fentanyl buccal tablet (FBT) over 3 months of treatment. METHODS: This was an observational, prospective, multicenter study in France conducted over 1 year. The study employed primary data collection in FBT-treated patients and their treating physicians via a site qualification questionnaire and patient log completed by physicians and a questionnaire and pain diary completed by patients. Strategies to increase participation included reminders, newsletters, frequent follow-up telephone calls, and reducing the extent of data collected. RESULTS: Of the 1118 physicians contacted who returned the participation form or responded to a telephone call, only 128 expressed willingness to participate. Key reasons for non-participation were lack of interest (69.7%) and FBT not being used in practice by the contacted physician (25.1%). Overall, 224 patients were screened by 31 physicians, and 97 were enrolled. Key reasons for patient non-inclusion were unwillingness or inability to complete the patient AE diary or questionnaire (40.9% [52/127]) and patients' decision (33.9% [43/127]). CONCLUSIONS: Despite efforts to increase participation, enrollment in this study was low. Recruitment and retention methods are limited in their capacity to optimally execute a primary data collection in a PASS. For a PASS to provide reliable and valid information on medication use, involvement from health care agencies, regulators, and pharmaceutical companies is needed to establish their importance, drive study participation, and reduce patient withdrawal. CI - Copyright (c) 2017 John Wiley & Sons, Ltd. FAU - Gavrielov-Yusim, Natalie AU - Gavrielov-Yusim N AUID- ORCID: 0000-0003-2273-231X AD - Teva Pharmaceutical Industries Ltd., Petach-Tikva, Israel. FAU - Bidollari, Ilda AU - Bidollari I AD - Teva Pharmaceuticals, Toronto, Canada. FAU - Kaplan, Sigal AU - Kaplan S AD - Teva Pharmaceutical Industries Ltd., Petach-Tikva, Israel. FAU - Bartov, Netta AU - Bartov N AD - Teva Pharmaceutical Industries Ltd., Petach-Tikva, Israel. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20171013 PL - England TA - Pharmacoepidemiol Drug Saf JT - Pharmacoepidemiology and drug safety JID - 9208369 RN - 0 (Analgesics, Opioid) RN - 0 (Tablets) RN - UF599785JZ (Fentanyl) SB - IM MH - Administration, Buccal MH - Analgesics, Opioid/administration & dosage/*adverse effects MH - Diaries as Topic MH - Fentanyl/administration & dosage/*adverse effects MH - France MH - Humans MH - Intersectoral Collaboration MH - Multicenter Studies as Topic MH - Observational Studies as Topic MH - Pain/drug therapy MH - Patient Participation/psychology MH - *Patient Selection MH - Physicians/statistics & numerical data MH - *Pragmatic Clinical Trials as Topic MH - Surveys and Questionnaires/statistics & numerical data MH - Tablets MH - Treatment Outcome OTO - NOTNLM OT - patient selection OT - postmarketing OT - product surveillance OT - safety EDAT- 2017/10/14 06:00 MHDA- 2019/09/17 06:00 CRDT- 2017/10/14 06:00 PHST- 2017/04/25 00:00 [received] PHST- 2017/09/07 00:00 [revised] PHST- 2017/09/13 00:00 [accepted] PHST- 2017/10/14 06:00 [pubmed] PHST- 2019/09/17 06:00 [medline] PHST- 2017/10/14 06:00 [entrez] AID - 10.1002/pds.4331 [doi] PST - ppublish SO - Pharmacoepidemiol Drug Saf. 2018 May;27(5):457-463. doi: 10.1002/pds.4331. Epub 2017 Oct 13.