{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T16:57:32Z","timestamp":1791305852201,"version":"4.3.1"},"reference-count":0,"publisher":"Royal College of General Practitioners","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BJGP Open"],"accepted":{"date-parts":[[2026,9,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Recruiting general practices for research is challenging. Practice-based research networks (PBRNs) may improve participation, but little is known about how newly established PBRNs function operationally in multicentre studies.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>To evaluate recruitment effort, participation, data completeness, and acceptability in the first joint study of six German PBRNs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design and setting<\/jats:title>\n                    <jats:p>Multicentre cross-sectional feasibility study across 18 university sites in six German PBRNs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>GPs completed an online REDCap survey covering practice characteristics, aggregated patient numbers manually extracted from practice management systems (PMS), and attitudes towards post-COVID\/post-vaccination-related symptoms. Sites documented contacts, reminders, and time investment. A two-step cluster analysis characterised site-level recruitment strategies, and a generalised linear mixed model examined predictors of data completeness.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of 906 contacted GPs, 156 participated (17.2%); 69 (7.6%) provided near-complete datasets (\u226590% item response). Recruitment required 134 staff-hours overall, equivalent to about 2 hours and 13 contacted GPs per near-complete dataset, and varied substantially between sites. Two recruitment clusters emerged: an email-oriented, low-effort strategy that recruited more practices overall, and a phone-intensive, high-effort strategy that achieved higher response rates but lower acceptability. Data completeness was lowest for PMS-derived patient data. Completeness varied by site, but not by PBRN or recruitment cluster, and was higher among younger and female GPs, in multi-doctor practices, and among those with prior research experience.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In this first joint German PBRN project, participation and data completeness were limited despite network affiliation. Site-level capability, practice research experience, and easier extraction of routine data appear crucial for future PBRN studies.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3399\/bjgpo.2026.0113","type":"journal-article","created":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T16:45:22Z","timestamp":1791305122000},"page":"BJGPO.2026.0113","source":"Crossref","is-referenced-by-count":0,"title":["Recruitment and participation of general practices in research networks: quantitative evaluation of the first joint study in six German practice-based research networks"],"prefix":"10.3399","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6538-0241","authenticated-orcid":false,"given":"Michael","family":"Pentzek","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susanne","family":"L\u00f6scher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karen","family":"Voigt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steve","family":"Piller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4263-2682","authenticated-orcid":false,"given":"Susanne","family":"D\u00f6pfmer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Kretzschmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karola","family":"Mergenthal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Polanc","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ann-Kathrin","family":"Lepper","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena D","family":"Hohmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1987","published-online":{"date-parts":[[2026,10,6]]},"container-title":["BJGP Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.3399\/BJGPO.2026.0113","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T16:45:23Z","timestamp":1791305123000},"score":1,"resource":{"primary":{"URL":"http:\/\/bjgpopen.org\/lookup\/doi\/10.3399\/BJGPO.2026.0113"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10,6]]},"references-count":0,"alternative-id":["10.3399\/BJGPO.2026.0113"],"URL":"https:\/\/doi.org\/10.3399\/bjgpo.2026.0113","relation":{},"ISSN":["2398-3795"],"issn-type":[{"value":"2398-3795","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,10,6]]}}}