ObjectivesThe objective of this review is to explore interactions between physicians and the pharmaceutical industry including sales representatives and their impact on physicians’ attitude and prescribing habits.Data sourcesPubMed, Embase, Cochrane Library and Google scholar electronic databases were searched from 1992 to August 2016 using free-text words and medical subject headings relevant to the topic.Study selectionStudies included cross-sectional studies, cohort studies, randomised trials and survey designs. Studies with narrative reviews, case reports, opinion polls and letters to the editor were excluded from data synthesis.Data extractionTwo reviewers independently extracted the data. Data on study design, study year, country, participant characteristics, setting and number of participants were collected.Data synthesisPharmaceutical industry and pharmaceutical sales representative (PSR) interactions influence physicians’ attitudes and their prescribing behaviour and increase the number of formulary addition requests for the company’s drug.ConclusionPhysician–pharmaceutical industry and its sales representative’s interactions and acceptance of gifts from the company’s PSRs have been found to affect physicians’ prescribing behaviour and are likely to contribute to irrational prescribing of the company’s drug. Therefore, intervention in the form of policy implementation and education about the implications of these interactions is needed.

Background: Research in primary care is essential, but recruiting children in this setting can be complex and may cause selection bias. Challenges surrounding informed consent, particularly in an acute clinical setting, can undermine feasibility. The off-protocol use of an intervention nearing implementation has become common in pragmatic randomized controlled trials (RCTs) set in primary care. Aim: To describe how the informed consent procedure affects study inclusion and to assess how off-protocol medication prescribing affects participant selection in a paediatric RCT. Design: A pragmatic RCT evaluating the cost-effectiveness of oral ondansetron in children diagnosed with acute gastroenteritis in primary care out-of-hours services and a parallel cohort study. Method: Consecutive children aged 6 months to 6 years attending primary care out-of-hours services with acute gastroenteritis were evaluated to assess the feasibility of obtaining informed consent, the off-protocol use of ondansetron, and other inclusion/exclusion criteria. Results: The RCTs feasibility was reduced by the informed consent procedure because 39.0% (325/834) of children were accompanied by only one parent. General practitioners prescribed ondansetron off-protocol to 34 children (4.1%), whereof 19 children were eligible for the RCT. RCT-eligible children included in the parallel cohort had fewer risk factors for dehydration than children in the RCT despite similar dehydration assessments by general practitioners. Conclusion: The informed consent procedure and off-protocol use of study medication affect the inclusion rate but had little effect on selection. A parallel cohort study alongside the RCT can help evaluate selection bias, and a pilot study can reveal potential barriers to inclusion.

BackgroundHospital admission rates are increasing for children with acute gastroenteritis. However, it is unknown whether this increase is accompanied by an increase in referral rates from GPs due to increased workloads in primary care out-of-hours (OOH) services.AimTo assess trends in referral rates from primary care OOH services to specialist emergency care for children presenting with acute gastroenteritis.Design & settingThis retrospective cohort study covered a period from September 2007–September 2014. Children aged 6 months to 6 years presenting with acute gastroenteritis to a primary care OOH service were included.MethodPseudonymised data were obtained, and children were analysed overall and by age category. Χ2 trend tests were used to assess rates of acute gastroenteritis, referrals, face-to-face contacts, and oral rehydration therapy (ORT) prescriptions.ResultsThe data included 12 455 children (6517 boys), with a median age of 20.2 months (interquartile range [IQR] 11.6 to 36.0 months). Over 7 years, incidence rates of acute gastroenteritis decreased significantly, and face-to-face contact rates increased significantly (both, P<0.01). However, there was no significant trend for referral rates (P = 0.87) or prescription rates for ORT (P = 0.82). Subgroup analyses produced comparable results, although there was an increase in face-to-face contact rates for the older children.ConclusionIncidence rates for childhood acute gastroenteritis presenting in OOH services decreased and referral rates did not increase significantly. These findings may be useful as a reference for the impact of new interventions for childhood acute gastroenteritis.