Publications

2018

Spencer, Samantha, Chloe Majkowski, and Katie J Suda. (2018) 2018. “Predictors of Publication Rates for Abstracts Presented at the American Association of Colleges of Pharmacy Annual Meetings.”. American Journal of Pharmaceutical Education 82 (8): 6409. https://doi.org/10.5688/ajpe6409.

Objective. To examine trends in manuscript publication rates for abstracts presented at the 2000, 2005, 2010, and 2015 American Association of Colleges of Pharmacy (AACP) annual meetings. Methods. A systematic search of PubMed, Scopus, and Google Scholar was performed. "New" colleges and schools of pharmacy were defined as receiving accreditation after 1996. Contingency tables and t-tests were applied. Results. There were 1382 abstracts evaluated. The overall publication rate was 20% and there was no difference in publication rates over 15 years. The median time to publication for years 2000, 2005, and 2010 was 15 months. The most frequent journal for publication was the American Journal of Pharmaceutical Education. The primary analysis identified several predictors for publication, including collaboration, presence of a PhD pharmaceutical program or academic medical center, and use of inferential statistics. There was no difference in manuscript publication when comparing "new" and legacy schools. Conclusion. The publication rate of AACP abstracts has remained steady despite the increase in pharmacy schools and colleges and faculty. Collaboration among institutions was the strongest predictor for publication, highlighting its importance. The low publication rate observed may be attributed to a lack of training for junior faculty, insufficient forums to publish work, or misaligned motivations for scholarship among faculty. These barriers should be examined further.

Dumkow, Lisa E, Katie L Axford, K J Suda, Heather M Draper, and Kasey L Brandt. (2018) 2018. “Impact of a Stewardship-Focused Culture Follow-up Initiative on the Treatment of Pharyngitis in the Emergency Department and Urgent Care Settings.”. Diagnostic Microbiology and Infectious Disease 92 (2): 136-42. https://doi.org/10.1016/j.diagmicrobio.2018.05.014.

A culture follow-up program with an emphasis on symptom assessment may limit antibiotic exposure in patients with Group A Streptococcus on throat culture. A quasi-experimental study of such patients was conducted in our Emergency Department and Urgent Care centers. During the prestewardship initiative phase (March 2011-June 2012), the standard of care for culture follow-up did not include symptom assessment prior to prescribing antibiotics. During the stewardship initiative phase (March 2015-June 2016), culture follow-up was completed with a focus on symptom assessment and antibiotic avoidance. Two-hundred eighty patients were included. Antibiotic prescribing at follow-up decreased from 97.0% to 71.3% (P < 0.001); overall appropriateness of therapy at follow-up, including symptom assessment, increased from 6.0% to 81.5% (P < 0.001). There was no difference in 72-h revisit between the pre- and poststewardship initiative groups (P = 0.121). This study demonstrated improved antimicrobial prescribing with initiation of a stewardship-focused culture follow-up program in the Emergency Department and Urgent Care centers.

Donohue, Julie M, Hasan Guclu, Walid F Gellad, Chung-Chou H Chang, Haiden A Huskamp, Niteesh K Choudhry, Ruoxin Zhang, et al. (2018) 2018. “Influence of Peer Networks on Physician Adoption of New Drugs.”. PloS One 13 (10): e0204826. https://doi.org/10.1371/journal.pone.0204826.

Although physicians learn about new medical technologies from their peers, the magnitude and source of peer influence is unknown. We estimate the effect of peer adoption of three first-in-class medications (dabigatran, sitigliptin, and aliskiren) on physicians' own adoption of those medications. We included 11,958 physicians in Pennsylvania prescribing anticoagulant, antidiabetic, and antihypertensive medications. We constructed 4 types of peer networks based on shared Medicare and Medicaid patients, medical group affiliation, hospital affiliation, and medical school/residency training. Instrumental variables analysis was used to estimate the causal effect of peer adoption (fraction of peers in each network adopting the new drug) on physician adoption (prescribing at least the median number prescriptions within 15 months of the new drug's introduction). We illustrate how physician network position can inform targeting of interventions to physicians by computing a social multiplier. Dabigatran was adopted by 25.2%, sitagliptin by 24.5% and aliskiren by 8.3% of physicians. A 10-percentage point increase in peer adoption in the patient-sharing network led to a 5.90% (SE = 1.50%, p<0.001) increase in physician adoption of dabigatran, 8.32% (SE = 1.51%, p<0.001) increase in sitagliptin, and 7.84% increase in aliskiren adoption (SE = 2.93%, p<0.001). Peer effects through shared hospital affiliation were positive but not significant, and medical group and training network effects were not reliably estimated. Physicians in the top decile of patient-sharing network peers were estimated to have nearly 2-fold stronger influence on their peers' adoption compared to physicians in the top decile of prescribing volume. Limitations include lack of detailed clinical information and pharmaceutical promotion, variables which may influence physician adoption but which are unlikely to bias our peer effect estimates. Peer adoption, especially by those with whom physicians share patients, strongly influenced physician adoption of new drugs. Our study shows the potential for using information on physician peer networks to improve technology diffusion.

Radomski, Thomas R, Felicia R Bixler, Susan L Zickmund, KatieLynn M Roman, Carolyn T Thorpe, Jennifer A Hale, Florentina E Sileanu, et al. (2018) 2018. “Physicians’ Perspectives Regarding Prescription Drug Monitoring Program Use Within the Department of Veterans Affairs: A Multi-State Qualitative Study.”. Journal of General Internal Medicine 33 (8): 1253-59. https://doi.org/10.1007/s11606-018-4374-1.

BACKGROUND: The Department of Veterans Affairs (VA) has implemented robust strategies to monitor prescription opioid dispensing, but these strategies have not accounted for opioids prescribed by non-VA providers. State-based prescription drug monitoring programs (PDMPs) are a potential tool to identify VA patients' receipt of opioids from non-VA prescribers, and recent legislation requires their use within VA.

OBJECTIVE: To evaluate VA physicians' perspectives and experiences regarding use of PDMPs to monitor Veterans' receipt of opioids from non-VA prescribers.

DESIGN: Qualitative study using semi-structured interviews.

PARTICIPANTS: Forty-two VA primary care physicians who prescribed opioids to 15 or more Veterans in 2015. We sampled physicians from two states with PDMPs (Massachusetts and Illinois) and one without prescriber access to a PDMP at the time of the interviews (Pennsylvania).

APPROACH: From February to August 2016, we conducted semi-structured telephone interviews that addressed the following topics regarding PDMPs: overall experiences, barriers to optimal use, and facilitators to improve use.

KEY RESULTS: VA physicians broadly supported use of PDMPs or desired access to one, while exhibiting varying patterns of PDMP use dictated by state laws and their clinical judgment. Physicians noted administrative burdens and incomplete or unavailable prescribing data as key barriers to PDMP use. To facilitate use, physicians endorsed (1) linking PDMPs with the VA electronic health record, (2) using templated notes to document PDMP use, and (3) delegating routine PDMP queries to ancillary staff.

CONCLUSIONS: Despite the time and administrative burdens associated with their use, VA physicians in our study broadly supported PDMPs. The application of our findings to ongoing PDMP implementation efforts may strengthen PDMP use both within and outside VA and improve the safe prescribing of opioids.

Anderson, Timothy S, Wei-Hsuan Lo-Ciganic, Walid F Gellad, Rouxin Zhang, Haiden A Huskamp, Niteesh K Choudhry, Chung-Chou H Chang, et al. (2018) 2018. “Patterns and Predictors of Physician Adoption of New Cardiovascular Drugs.”. Healthcare (Amsterdam, Netherlands) 6 (1): 33-40. https://doi.org/10.1016/j.hjdsi.2017.09.004.

BACKGROUND: Little is known about physicians' approaches to adopting new cardiovascular drugs and how adoption varies between drugs of differing novelty.

METHODS: Using data on dispensed prescriptions from IMS Health's Xponent™ database, we created a cohort of all primary care physicians (PCPs) and cardiologists in Pennsylvania who regularly prescribed anticoagulants, antihypertensives and statins from 2007 to 2011. We examined prescribing of three new cardiovascular drugs of differing novelty: dabigatran, aliskiren and pitavastatin. Outcomes were rapid adoption of each new drug, defined by early and sustained monthly prescribing detected by group-based trajectory models, by physicians within the first 15 months of marketplace introduction.

RESULTS: 5953 physicians regularly prescribed each drug class. The majority of physicians (63.8%) adopted zero new drugs in the first 15 months, 35.0% rapidly adopted one or two, and 1.2% rapidly adopted all three. Physicians were more likely to rapidly adopt the most novel drug, dabigatran (27.3%), than aliskiren (10.5%) or pitavastatin (8.0%). Physician specialty and sex were the most consistent predictors of adoption. Compared to PCPs, cardiologists were more likely to rapidly adopt dabigatran (Adjusted Odds Ratio 8.90, 95% confidence interval 7.42-10.67; P<0.001) aliskerin (2.05, CI 1.56-2.69; P<0.001) and pitavastatin (3.44, CI 2.60-4.57; P<0.001). Female physicians were less likely to adopt dabigatran (0.71, CI 0.59-0.85; P <0.001) and aliskiren (0.64, CI 0.49-0.83; P <0.001).

CONCLUSIONS: Physicians vary in their prescribing of recently-introduced cardiovascular drugs. Though most physicians did not rapidly adopt any new cardiovascular drugs, drug novelty and cardiology training were associated with greater adoption.