Can access limits on sales representatives to physicians affect clinical prescription decisions? A study of recent events with diabetes and lipid drugs

Information shocks and pharmaceutical firms' marketing efforts: Evidence from the Chantix black box warning removal

We study how pharmaceutical firm marketing responds to a regulatory decision that represents a positive information shock about drug safety. In the context of the smoking cessation drug Chantix, we estimate the effects of a Food and Drug Administration (FDA) decision to remove the drug's black box warning on two forms of marketing: monetary and in-kind payments to physicians (detailing) and direct-to-consumer advertising. Using identification strategies that leverage geographic variation in latent demand for smoking cessation therapy and the targeted nature of the information shock, we find that the removal of the warning significantly increased Chantix-related detailing payments and increased expenditures on national television advertising of Chantix. Understanding these firm-level strategic promotion responses is important, as they have implications for the dissemination of new drug information and the behaviors of physicians and consumers.

Barriers and facilitators to the uptake of new medicines into clinical practice: a systematic review

BACKGROUND

Implementation and uptake of novel and cost-effective medicines can improve patient health outcomes and healthcare efficiency. However, the uptake of new medicines into practice faces a wide range of obstacles. Earlier reviews provided insights into determinants for new medicine uptake (such as medicine, prescriber, patient, organization, and external environment factors). However, the methodological approaches used had limitations (e.g., single author, narrative review, narrow search, no quality assessment of reviewed evidence). This systematic review aims to identify barriers and facilitators affecting the uptake of new medicines into clinical practice and identify areas for future research.

METHOD

A systematic search of literature was undertaken within seven databases: Medline, EMBASE, Web of Science, CINAHL, Cochrane Library, SCOPUS, and PsychINFO. Included in the review were qualitative, quantitative, and mixed-methods studies focused on adult participants (18 years and older) requiring or taking new medicine(s) for any condition, in the context of healthcare organizations and which identified factors affecting the uptake of new medicines. The methodological quality was assessed using QATSDD tool. A narrative synthesis of reported factors was conducted using framework analysis and a conceptual framework was utilised to group them.

RESULTS

A total of 66 studies were included. Most studies (n = 62) were quantitative and used secondary data (n = 46) from various databases, e.g., insurance databases. The identified factors had a varied impact on the uptake of the different studied new medicines. Differently from earlier reviews, patient factors (patient education, engagement with treatment, therapy preferences), cost of new medicine, reimbursement and formulary conditions, and guidelines were suggested to influence the uptake. Also, the review highlighted that health economics, wider organizational factors, and underlying behaviours of adopters were not or under explored.

CONCLUSION

This systematic review has identified a broad range of factors affecting the uptake of new medicines within healthcare organizations, which were grouped into patient, prescriber, medicine, organizational, and external environment factors. This systematic review also identifies additional factors affecting new medicine use not reported in earlier reviews, which included patient influence and education level, cost of new medicines, formulary and reimbursement restrictions, and guidelines.

REGISTRATION

PROSPERO database (CRD42018108536).

Adherence to Current Lipid Guidelines by Physicians in Kuwait

BACKGROUND

Alarmingly high rates of dyslipidemia have been found in the Gulf region in patients presenting with acute coronary syndrome, with the highest being found in Kuwait (37%). Therefore, it is of utmost importance to treat dyslipidemia promptly and effectively. In an effort to understand the practices of local physicians, the use of evidence-based medicine, and adherence to lipid treatment guidelines, the objective of this study was to survey and assess the current standards of care.

METHODS

A survey questionnaire, designed to assess physicians' attitudes and practice towards lipid guidelines, was completed by 279 participants and returned between October 2015 and June 2016. Statistical analysis was done using SPSS.

RESULTS

Over 90% of physicians claimed to use lipid guidelines, with the majority rating themselves as knowledgeable. Younger physicians were found to be less knowledgeable and consequently used guidelines less frequently. The most important factor influencing clinical decision-making was the availability of clinical guidelines. The majority (72.4%) of physicians identified time limitation as a key barrier. The most commonly selected lipid guideline in daily practice was a guideline on the treatment of blood cholesterol published by the American College of Cardiology/American Heart Association in 2013. The most common risk assessment tool used was the Framingham risk score.

CONCLUSIONS

Multiple interventions to improve guideline adherence are proposed in this study. We have taken into account the barriers to adherence, i.e., attitude, behavior, and (most importantly) knowledge, all 3 of which were reaffirmed in our investigation in Kuwait.

Association between physician adoption of a new oral anti-diabetic medication and Medicare and Medicaid drug spending

BACKGROUND

In the United States, there is well-documented regional variation in prescription drug spending. However, the specific role of physician adoption of brand name drugs on the variation in patient-level prescription drug spending is still being investigated across a multitude of drug classes. Our study aims to add to the literature by determining the association between physician adoption of a first-in-class anti-diabetic (AD) drug, sitagliptin, and AD drug spending in the Medicare and Medicaid populations in Pennsylvania.

METHODS

We obtained physician-level data from QuintilesIMS Xponent™ database for Pennsylvania and constructed county-level measures of time to adoption and share of physicians adopting sitagliptin in its first year post-introduction. We additionally measured total AD drug spending for all Medicare fee-for-service and Part D enrollees (N = 125,264) and all Medicaid (N = 50,836) enrollees with type II diabetes in Pennsylvania for 2011. Finite mixture model regression, adjusting for patient socio-demographic/clinical characteristics, was used to examine the association between physician adoption of sitagliptin and AD drug spending.

RESULTS

Physician adoption of sitagliptin varied from 44 to 99% across the state's 67 counties. Average per capita AD spending was $1340 (SD $1764) in Medicare and $1291 (SD $1881) in Medicaid. A 10% increase in the share of physicians adopting sitagliptin in a county was associated with a 3.5% (95% CI: 2.0-4.9) and 5.3% (95% CI: 0.3-10.3) increase in drug spending for the Medicare and Medicaid populations, respectively.

CONCLUSIONS

In a medication market with many choices, county-level adoption of sitagliptin was positively associated with AD spending in Medicare and Medicaid, two programs with different approaches to formulary management.

Interactions between physicians and the pharmaceutical industry generally and sales representatives specifically and their association with physicians' attitudes and prescribing habits: a systematic review

OBJECTIVES

The 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 SOURCES

PubMed, 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 SELECTION

Studies 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 EXTRACTION

Two reviewers independently extracted the data. Data on study design, study year, country, participant characteristics, setting and number of participants were collected.

DATA SYNTHESIS

Pharmaceutical 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.

CONCLUSION

Physician-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.

Association Between Academic Medical Center Pharmaceutical Detailing Policies and Physician Prescribing

IMPORTANCE

In an effort to regulate physician conflicts of interest, some US academic medical centers (AMCs) enacted policies restricting pharmaceutical representative sales visits to physicians (known as detailing) between 2006 and 2012. Little is known about the effect of these policies on physician prescribing.

OBJECTIVE

To analyze the association between detailing policies enacted at AMCs and physician prescribing of actively detailed and not detailed drugs.

DESIGN, SETTING, AND PARTICIPANTS

The study used a difference-in-differences multivariable regression analysis to compare changes in prescribing by physicians before and after implementation of detailing policies at AMCs in 5 states (California, Illinois, Massachusetts, Pennsylvania, and New York) that made up the intervention group with changes in prescribing by a matched control group of similar physicians not subject to a detailing policy.

EXPOSURES

Academic medical center implementation of policies regulating pharmaceutical salesperson visits to attending physicians.

MAIN OUTCOMES AND MEASURES

The monthly within-drug class market share of prescriptions written by an individual physician for detailed and nondetailed drugs in 8 drug classes (lipid-lowering drugs, gastroesophageal reflux disease drugs, diabetes drugs, antihypertensive drugs, hypnotic drugs approved for the treatment of insomnia [sleep aids], attention-deficit/hyperactivity disorder drugs, antidepressant drugs, and antipsychotic drugs) comparing the 10- to 36-month period before implementation of the detailing policies with the 12- to 36-month period after implementation, depending on data availability.

RESULTS

The analysis included 16 121 483 prescriptions written between January 2006 and June 2012 by 2126 attending physicians at the 19 intervention group AMCs and by 24 593 matched control group physicians. The sample mean market share at the physician-drug-month level for detailed and nondetailed drugs prior to enactment of policies was 19.3% and 14.2%, respectively. Exposure to an AMC detailing policy was associated with a decrease in the market share of detailed drugs of 1.67 percentage points (95% CI, -2.18 to -1.18 percentage points; P < .001) and an increase in the market share of nondetailed drugs of 0.84 percentage points (95% CI, 0.54 to 1.14 percentage points; P < .001). Associations were statistically significant for 6 of 8 study drug classes for detailed drugs (lipid-lowering drugs, gastroesophageal reflux disease drugs, antihypertensive drugs, sleep aids, attention-deficit/hyperactivity disorder drugs, and antidepressant drugs) and for 9 of the 19 AMCs that implemented policies. Eleven of the 19 AMCs regulated salesperson gifts to physicians, restricted salesperson access to facilities, and incorporated explicit enforcement mechanisms. For 8 of these 11 AMCs, there was a significant change in prescribing. In contrast, there was a significant change at only 1 of 8 AMCs that did not enact policies in all 3 areas.

CONCLUSIONS AND RELEVANCE

Implementation of policies at AMCs that restricted pharmaceutical detailing between 2006 and 2012 was associated with modest but significant reductions in prescribing of detailed drugs across 6 of 8 major drug classes; however, changes were not seen in all of the AMCs that enacted policies.

Association between physicians' interaction with pharmaceutical companies and their clinical practices: A systematic review and meta-analysis

BACKGROUND

Pharmaceutical company representatives likely influence the prescribing habits and professional behaviors of physicians. The objective of this study was to systematically review the association between physicians' interactions with pharmaceutical companies and their clinical practices.

METHODS

We used the standard systematic review methodology. Observational and experimental study designs examining any type of targeted interaction between practicing physicians and pharmaceutical companies were eligible. The search strategy included a search of MEDLINE and EMBASE databases up to July 2016. Two reviewers selected studies, abstracted data, and assessed risk of bias in duplicate and independently. We assessed the quality of evidence using the GRADE approach.

RESULTS

Twenty articles reporting on 19 studies met our inclusion criteria. All of these studies were conducted in high-income countries and examined different types of interactions, including detailing, industry-funded continuing medical education, and receiving free gifts. While all included studies assessed prescribing behaviors, four studies also assessed financial outcomes, one assessed physicians' knowledge, and one assessed their beliefs. None of the studies assessed clinical outcomes. Out of the 19 studies, 15 found a consistent association between interactions promoting a medication, and inappropriately increased prescribing rates, lower prescribing quality, and/or increased prescribing costs. The remaining four studies found both associations and lack of significant associations for the different types of exposures and drugs examined in the studies. A meta-analysis of six of these studies found a statistically significant association between exposure and physicians' prescribing behaviors (OR = 2.52; 95% CI 1.82-3.50). The quality of evidence was downgraded to moderate for risk of bias and inconsistency. Sensitivity analysis excluding studies at high risk of bias did not substantially change these results. A subgroup analysis did not find a difference by type of exposure.

CONCLUSION

There is moderate quality evidence that physicians' interactions with pharmaceutical companies are associated with their prescribing patterns and quality.

Who Were the Early Adopters of Dabigatran?: An Application of Group-based Trajectory Models

BACKGROUND

Variation in physician adoption of new medications is poorly understood. Traditional approaches (eg, measuring time to first prescription) may mask substantial heterogeneity in technology adoption.

OBJECTIVE

Apply group-based trajectory models to examine the physician adoption of dabigratran, a novel anticoagulant.

METHODS

A retrospective cohort study using prescribing data from IMS Xponent™ on all Pennsylvania physicians regularly prescribing anticoagulants (n=3911) and data on their characteristics from the American Medical Association Masterfile. We examined time to first dabigatran prescription and group-based trajectory models to identify adoption trajectories in the first 15 months. Factors associated with rapid adoption were examined using multivariate logistic regressions.

OUTCOMES

Trajectories of monthly share of oral anticoagulant prescriptions for dabigatran.

RESULTS

We identified 5 distinct adoption trajectories: 3.7% rapidly and extensively adopted dabigatran (adopting in ≤3 mo with 45% of prescriptions) and 13.4% were rapid and moderate adopters (≤3 mo with 20% share). Two groups accounting for 21.6% and 16.1% of physicians, respectively, were slower to adopt (6-10 mo post-introduction) and dabigatran accounted for <10% share. Nearly half (45.2%) of anticoagulant prescribers did not adopt dabigatran. Cardiologists were much more likely than primary care physicians to rapidly adopt [odds ratio (OR)=12.2; 95% confidence interval (CI), 9.27-16.1] as were younger prescribers (age 36-45 y: OR=1.49, 95% CI, 1.13-1.95; age 46-55: OR=1.34, 95% CI, 1.07-1.69 vs. >55 y).

CONCLUSIONS

Trajectories of physician adoption of dabigatran were highly variable with significant differences across specialties. Heterogeneity in physician adoption has potential implications for the cost and effectiveness of treatment.

A study on the interactions of doctors with medical representatives of pharmaceutical companies in a Tertiary Care Teaching Hospital of South India

Background:

The promotional activities by medical representatives (MRs) of the pharmaceutical companies can impact the prescribing pattern of doctors. Hence, the interaction between doctors and the pharmaceutical industry is coming under increasing scrutiny.

Objective:

The primary objective was to assess the attitude of the doctors toward the interaction with the MRs of the pharmaceutical company. The secondary objective was to assess the awareness of the doctors about regulations governing their interaction with the pharmaceutical company.

Materials and Methods:

This was a cross-sectional study. This study was carried out using a pretested questionnaire containing 10 questions between June and September 2014. The doctors working in the Dhanalakshmi Srinivasan Medical College and Hospital, Perambalur (Tamil Nadu) during the study period was included.

Results:

A total of 100 pretested questionnaires were distributed, and 81 doctors responded (response rate 81%). 37% doctors responded that they interacted with MR once a week whereas 25.9% told that they interact with MRs twice a month. About 69.1% doctors think that MR exaggerate the benefits of medicines and downplays the risks and contraindications of medicine(P = 0.000). 61.7% doctors think that MR has an impact on their prescribing (P = 0.000). 63% doctors stated that they had received promotional tools such as stationery items, drug sample, textbooks or journal reprints from MR in last 12 months (P = 0.0012). Unfortunately, 70.4% doctors have not read the guidelines about interacting with the pharmaceutical industry or its representative (P = 0.000).

Conclusion:

Rather than forbidding any connection between doctors and industry, it is better to establish ethical guidelines. The Medical Council of India code is a step in the right direction, but the majority of doctors in this study have not read the guidelines about interacting with the pharmaceutical industry or its representative.

Validity of tools used for surveying physicians about their interactions with pharmaceutical company: a systematic review

BACKGROUND

There is evidence that physicians' prescription behavior is negatively affected by the extent of their interactions with pharmaceutical companies. In order to develop and implement policies and interventions for better management of interactions, we need to understand physicians' perspectives on this issue. Surveys addressing physicians' interactions with pharmaceutical companies need to use validated tools to ensure the validity of their findings.

OBJECTIVE

To assess the validity of tools used in surveys of physicians about the extent and nature of their interactions with pharmaceutical companies, and about their knowledge, beliefs and attitudes towards such interactions; and to identify those tools that have been formally validated.

METHODS

We developed a search strategy with the assistance of a medical librarian. We electronically searched MEDLINE and EMBASE databases in September 2015. Teams of two reviewers conducted data selection and data abstraction. They identified eligible studies in one table and then abstracted the relevant data from the studies with validated tools in another table. Tables were piloted and standardized.

RESULTS

We identified one validated questionnaire out of the 11 assessing the nature and extent of the interaction, and three validated questionnaires out of the 47 assessing knowledge, beliefs and attitudes of physicians toward the interaction. None of these validated questionnaires were used in more than one survey.

CONCLUSION

The available supporting evidence of the issue of physicians' interaction with pharmaceutical company is of low quality. There is a need for research to develop and validate tools to survey physicians about their interactions with pharmaceutical companies.

Not for industry only: medical students and office-based academic detailing the PIVOT (Pregnant women Influenza Vaccine Optimization Team) initiative

Academic detailing is a method of educational outreach that utilizes individualized encounters with physicians to broach specific medical issues in an evidence-based and quality-driven manner. Medical students utilized the matter of influenza vaccination during pregnancy as a lens through which to explore the methods of academic detailing in a community setting. Structured and customized dialogues between North Shore-LIJ affiliated obstetricians and Hofstra North Shore-LIJ medical students were conducted regarding the disparity between the proportion of providers that recommend the vaccine and the percentage of pregnant women being vaccinated annually. Ultimately the project aimed to increase vaccine-carrying rates throughout office based practices in the community, while establishing a viable method for up-to-date information exchange between practicing physicians and academic medicine. While the extent of affected change is currently being quantified, the project proved successful insofar as academic detailing allowed the students to gain access to physicians, and engage in compelling and educational conversations. Both the physicians and students felt these interactions were valuable and well worth continuing. The goal for the future is to expand these practices to other pressing public health issues while continuing to refine the technique.

Evaluation of factors affecting prescribing behaviors, in iran pharmaceutical market by econometric methods

Prescribing behavior of physicians affected by many factors. The present study is aimed at discovering the simultaneous effects of the evaluated factors (including: price, promotion and demographic characteristics of physicians) and quantification of these effects. In order to estimate these effects, Fluvoxamine (an antidepressant drug) was selected and the model was figured out by panel data method in econometrics. We found that insurance and advertisement respectively are the most effective on increasing the frequency of prescribing, whilst negative correlation was observed between price and the frequency of prescribing a drug. Also brand type is more sensitive to negative effect of price than to generic. Furthermore, demand for a prescription drug is related with physician demographics (age and sex). According to the results of this study, pharmaceutical companies should pay more attention to the demographic characteristics of physicians (age and sex) and their advertisement and pricing strategies.

After 20 years, industry critics bury skeptics, despite empirical vacuum

After more than 20 years, the conflict of interest (COI) movement has failed to substantiate its central claim that interactions between physicians, researchers and the medical products industry cause physicians to make clinical decisions that are adverse to the best interests of their patients. The COI movement's instigators have produced no solid evidence of harm commensurate with their extravagant allegations. At the same time, they have diverted resources away from more worthwhile pursuits, such as basic and applied medical research, clinical care and medical education towards onerous compliance exercises and obtrusive laws. Perhaps worst of all, they have made it respectable to ignore the epistemological foundations of medical science, diverting attention away from the scientific merit of the information presented and focusing it instead on the identity and motives of those who present the information.