Extent of physician-pharmaceutical industry interactions in low- and middle-income countries: a systematic review.

Background: Pharmaceutical companies spend large amounts of money promoting their products to physicians. There is evidence that physicians' interactions with pharmaceutical companies negatively affect their prescribing patterns. The objective of this study was to systematically review the extent of the relationship between physicians and pharmaceutical companies in low- and middle-income countries (LMICs). Methods: Studies assessing the extent of any type of interaction between practicing physicians and pharmaceutical companies were eligible. We searched MEDLINE and EMBASE databases in July 2016. Reviewers worked in duplicate and independently to complete study selection, data abstraction and assessment of methodological features. We summarized the findings narratively. Results: We included 11 eligible studies (7 quantitative and 4 qualitative). Quantitative studies found that pharmaceutical company representatives visited at least 90% of physicians. Printed material, stationery items and drug samples were the most frequently received gifts. Two of the studies assessing direct payment found percentages of 16 and 5%, respectively. Findings of qualitative studies were consistent with those of quantitative studies. In addition, they revealed an increasing tendency for pharmaceutical companies to provide expensive personal gifts, sponsor social events and offer cash as inducements to physicians based on their demands. They also identified building personal relationships, creating a sense of indebtedness and emotional blackmailing as commonly used techniques to influence physicians. Conclusion: A relatively high percentage of physicians in LMICs interact with pharmaceutical companies. Findings have implications for policy and practice, given the current extent of interaction is likely affecting the prescribing habits and professional behaviour of physicians.

Knowledge, beliefs and attitudes of physicians in low and middle-income countries regarding interacting with pharmaceutical companies: a systematic review.

BACKGROUND: Understanding the perceptions and attitudes of physicians is important. This knowledge assists in the efforts to reduce the impact of their interactions with the pharmaceutical industry on clinical practice. It appears that most studies on such perceptions and attitudes have been conducted in high-income countries. The objective was to systematically review the knowledge, beliefs and attitudes of physicians in low and middle-income countries regarding interactions with pharmaceutical companies. METHODS: Eligible studies addressed any type of interaction between physicians and pharmaceutical companies. The outcomes of interest included knowledge, beliefs and attitudes of practicing physicians. The search strategy covered MEDLINE and EMBASE databases. Two reviewers completed in duplicate and independently study selection, data abstraction, and assessment of methodological features. The data synthesis consisted of a narrative summary of the findings stratified by knowledge, beliefs and attitudes. RESULTS: We included ten reports from nine eligible studies, each of which had a number of methodological limitations. Four studies found that the top perceived benefits of this interaction were receiving information and rewards. In five out of eight studies assessing the perception regarding the impact of the interaction on the behavior of physician prescription, the majority of participants believed it to be minor. In one of these studies, participants perceived that impact to be lesser when asked about their own behavior. The attitudes of physicians towards information and rewards provided by pharmaceutical company representatives (PCRs) (assessed in 5 and 2 studies respectively) varied across studies. In the only study assessing their attitudes towards pharmaceutical-sponsored Continuing Medical Education, physicians considered local conferences to have higher impact. Their attitudes towards developing policies restricting physicians' interactions with PCRs were positive in two studies. In one study, the majority of participants did not mind the public knowing that physicians were receiving gifts and awards from drug companies. CONCLUSIONS: This review identified few studies conducted in low and middle-income countries. While physicians generally perceived the impact of interactions on their behavior to be minor, their attitudes toward receiving information and rewards varied across studies.

Association between low vitamin D levels and the diagnosis of asthma in children: a systematic review of cohort studies.

BACKGROUND: There is conflicting evidence about the association between low vitamin D levels in children and development of asthma in later life. The objective of this study was to systematically review the evidence for an epidemiological association between low serum levels of vitamin D and the diagnosis of asthma in children. METHODS: We used the Cochrane methodology for conducting systematic reviews. The search strategy included an electronic search of MEDLINE and EMBASE in February 2013. Two reviewers completed, in duplicate and independently, study selection, data abstraction, and assessment of risk of bias. RESULTS: Of 1081 identified citations, three cohort studies met eligibility criteria. Two studies found that low serum vitamin D level is associated with an increased risk of developing asthma late in childhood, while the third study found no association with either vitamin D2 or vitamin D3 levels. All three studies suffer from major methodological shortcomings that limit our confidence in their results. CONCLUSIONS: Available epidemiological evidence suggests a potential association between low serum levels of vitamin D and the diagnosis of asthma in children. High quality studies are needed to reliably answer the question of interest.