META-INSTI: metabolic adverse events following integrase strand transfer inhibitor administration in spontaneous adverse event reports

Background

Metabolic effects of integrase strand transfer inhibitors (INSTIs) have been reported. The FDA Adverse Event Reporting System (FAERS) is a publicly available database that captures spontaneously reported adverse events. The objective of this study was to evaluate the relationship between INSTIs and metabolic adverse events using the FAERS database.

Methods

FAERS data were queried from quarter 4 of 2007 through quarter 4 of 2019 and limited to adults. The Standardized MedDRA Query for 'hyperglycaemia/new-onset diabetes mellitus' (H/DM) was used to identify metabolic adverse events of interest. Weight gain was analysed as a separate event. Reporting odds ratios (RORs) and 95% CIs were calculated for the INSTI class and individual agents.

Results

Over 10.1 million FAERS reports were identified. Any INSTI was mentioned as a primary and/or secondary suspect agent in 18,400 (0.18%) reports (bictegravir: 1414 [0.01%]; dolutegravir: 7840 [0.08%]; elvitegravir: 4034 [0.04%]; raltegravir: 5551 [0.05%]). RORs (95% CI) for H/DM and weight gain for any INSTI were 1.20 (1.15-1.27) and 2.16 (1.96-2.38). For individual agents, RORs (95% CI) for H/DM and weight gain were as follows: bictegravir, 1.23 (1.10-1.37) and 6.82 (5.50-8.41); dolutegravir, 1.28 (1.19-1.39) and 1.86 (1.58-2.18); elvitegravir, 0.76 (0.56-1.02) and 1.63 (1.37-1.92); and raltegravir, 1.00 (0.90-1.11) and 3.29 (2.77-3.91). H/DM was noted in 159 bictegravir and 712 dolutegravir reports.

Conclusion

Overall, H/DM was associated with bictegravir and dolutegravir and weight gain with all INSTIs. Clinicians should know the potential relationship between INSTIs and metabolic effects and institute appropriate monitoring.

This paper was previously presented

META-INSTI: Metabolic Adverse Events Following Integrase Strand Transfer Inhibitor Administration in Spontaneous Adverse Event Reports. Platform Presentation. ID Week. Virtual 2020.

Considerations for writing and including demographic variables in education research

OUR SITUATION

At many points within pharmacy education, we collect demographic information about faculty, staff, students, and trainees. Admissions procedures and surveys, for example, typically categorize participants based on various identities such as race and ethnicity as well as gender and sex. In this article, we interrogate the complex nature of capturing participant identities through demographic variables, using race and ethnicity, gender and sex, sexual orientation and identity, and disability status as specific examples.

METHODOLOGICAL LITERATURE REVIEW

Various approaches to defining demographic characteristics can be seen in pharmacy education research. To help readers understand why certain characteristics and categories are commonly utilized, we describe common influences of demographic variables, such as federal laws and professional guidelines. We also review several common demographic variables to illustrate the complexity of this issue.

OUR RECOMMENDATIONS AND THEIR APPLICATION(S)

Seven recommendations for improving demographic data collection and use are provided. Examples include respecting and honoring lived student experiences, defining demographic data more precisely, and channeling institutional resources toward specific student needs.

POTENTIAL IMPACT

Collecting demographic information more accurately and thoughtfully could help pharmacy education improve its educational practice and research. The provided recommendations provided will help researchers and educators measure and utilize demographic variables more effectively.

Last Matter: Introducing infographics to Methodology Matters

Visual summaries are gaining momentum in the health sciences literature. The Journal is introducing a new article type-Last Matter (LM). These will consist of infographics that quickly summarize and visually describe topics typically addressed in more detail within Methodology Matters reviews. The primary goal is to provide readers with clear guidance related to one or two common issues, pitfalls, or points of confusion when conducting pharmacy education scholarship. In addition to a graphical summary, a key element of each LM is a list of recommended resources for readers interested in more detailed information. The first Last Matter published in this issue summarizes key concepts related to quality in qualitative research. The Journal hopes these infographics may be helpful to for readers to comprehend and share, as well as to influence future contributions to the pharmacy education literature.

Analysis of pharmacy student communication self-evaluation skills during standardized patient encounters

INTRODUCTION

The objective of this study was to evaluate pharmacy students' communication self-evaluation skills by comparing student self-evaluations with those completed by course graders and standardized patients (SP).

METHODS

As part of a required communications course, third-year pharmacy students completed a medication counseling encounter with a SP during a midpoint encounter and final assessment. Students' communication skills were evaluated by course graders and SPs. Students used the same assessment rubric to also complete self-evaluations immediately after each event and after reviewing a recording of their midpoint encounter. Agreement among student, SP, and course grader ratings on individual items were examined using the kappa statistic.

RESULTS

A total of 206 students completed the midpoint encounter, and 208 completed the final assessment. Agreement between students' and SPs' evaluations was high during both the midpoint and final encounters, with >90% agreement on 14 out of 17 items at the midpoint encounter and 16 out of 17 during the final assessment. There were diffiences in scoring for the use of verbal distractors/fillers, with SPs' evaluations showing more favorable scores when differences existed [at midpoint 69 (33.7%) SP vs. 7 (3.4%) student; at final 31 (15%) SP vs. 3 (1.5%) student]. Agreement improved from the midpoint to final assessment (62.9% vs. 83.7%, respectively).

CONCLUSIONS

Self-evaluation of communication skills may be an acceptable alternative to faculty or SP evaluations, when appropriate for the purpose of the activity, based on the high agreement observed among communication skills evaluations completed by students, course graders, and SPs.

Identifying areas of improvement for cultural competence in pharmacy curricula: A multi-school study using the self-assessment of perceived level of cultural competence (SAPLCC) questionnaire

INTRODUCTION

The implementation of culturally competent healthcare services has been considered a key strategy for the provision of patient-centered care; however, a need remains to address the requirements of teaching cultural competence, including identifying gaps, designing and evaluating curricula, and assessing students' progress toward program objectives. The objective of this study was to explore the applicability of the Self-Assessment of Perceived Level of Cultural Competence (SAPLCC) questionnaire in the identification of improvement areas in cultural competence content in pharmacy curricula.

METHODS

This study used previously-collected SAPLCC data from student pharmacists at eight United States pharmacy schools. Total and factor-specific SAPLCC scores were calculated based on the 14 factors published previously and grouped into six domains (knowledge, skills, attitudes, encounters, abilities, and awareness). Differences in overall scores by domain and factors across various student characteristics were examined using analysis of variance.

RESULTS

The overall mean total SAPLCC score was classified as moderate. Third-year students had significantly higher SAPLCC mean scores than first-year students, and African American students scored significantly higher than their counterparts. At the factor-level, students scored higher in the Attitudes and Awareness domains and scored lower in the Knowledge, Skills, and Encounters domains.

CONCLUSIONS

The application of the SAPLCC in schools participating in this preliminary study allowed for the identification of content areas that may benefit from revision. The SAPLCC may be a useful tool for mapping cultural competence curricular content by each specific domain and identifying areas of potential improvement regarding cultural competence training within pharmacy curricula.

Meta-research in pharmacy: Time for a look in the mirror

The volume of the biomedical literature continues to expand at a substantial rate. The research literature surrounding pharmaceutical services is no different. Due in part to events in the recent past, researchers, consumers, funders, and policymakers have raised concerns about the credibility, transparency, and potential waste in the global research enterprise. Meta-research, or research on research, provides a way to examine the efficiency, quality, and potential bias in the overall research ecosystem. The field of meta-research is a relatively new but rapidly growing field that has seen many applications in biomedical research. Applications in pharmacy research, however, are still developing. The goals of this commentary are to introduce pharmacy researchers to the concept of meta-research, discuss several examples of meta-research in pharmacy, and motivate the importance of sustained meta-research efforts in pharmacy.

106. META-INSTI: Metabolic Adverse Events Following Integrase Strand Transfer Inhibitor Administration in Spontaneous Adverse Event Reports

Background

Unexpected metabolic effects of integrase inhibitors (INSTIs) have been reported in the literature. The FDA Adverse Event Reporting System (FAERS) is a publicly available database that captures spontaneously reported adverse events. Analysis of these data allows for the determination of whether rare or unknown events represent a cause for concern. The objective of this study was to evaluate the relationship between INSTIs and metabolic adverse events using the FAERS database.

Methods

FAERS data were queried from quarter 4 2007 through quarter 4 2019 and limited to adults. The Standardized MedDRA Query (SMQ) for hyperglycemia/new onset diabetes mellitus (H/DM) was used to identify metabolic adverse events of interest. Weight gain was defined as increased weight or increased BMI and was analyzed as a separate event. Reporting odds ratios (ROR) and 95% Confidence Intervals (CIs) were calculated for the INSTI class and for individual agents.

Results

Over 10.1 million FAERS reports were identified. H/DM was noted in 732,591 reports (7.2%); 109,566 (1.1%) reported weight gain. Consumers (49%) and physicians (23%) were the most common reporters. The most frequent countries of occurrence were the US, Great Britain, and Japan. The mean (SD) age was 57 (17) years with 63% females. Any INSTI was mentioned as a primary and/or secondary suspect agent in 18,400 (0.18%) reports (bictegravir: 1,414 [0.01%]; dolutegravir: 7,840 [0.08%]; elvitegravir: 4,034 [0.04%]; raltegravir: 5,551 [0.05%]). RORs (95% CI) for H/DM and weight gain for any INSTI were 1.20 (1.15, 1.27) and 2.16 (1.96, 2.38). For individual agents, RORs (95% CI) for H/DM and weight gain were bictegravir: 1.23 (1.10, 1.37) and 6.82 (5.50, 8.41); dolutegravir: 1.28 (1.19, 1.39) and 1.86 (1.58, 2.18); elvitegravir: 0.76 (0.56, 1.02) and 1.63 (1.37, 1.92); raltegravir: 1.00 (0.90, 1.11) and 3.29 (2.77, 3.91). H/DM was noted in 159 bictegravir and 712 dolutegravir reports.

Conclusion

Overall, H/DM was associated with bictegravir and dolutegravir; weight gain was associated with all INSTIs. Clinicians should be aware of the potential relationship with INSTIs and concerning metabolic effects and institute appropriate monitoring. Future clinical studies to evaluate these findings are warranted.

Disclosures

Milena M. Murray, PharmD, MSc, BCIDP, AAHIVP, Merck (Speaker’s Bureau)

Using multiple linear regression in pharmacy education scholarship

OUR SITUATION

There has been an increased interest in regression techniques within pharmacy education to allow researchers to determine variables that may predict a specific outcome (e.g., predicting student scores on the Pharmacy Curriculum Outcomes Assessment). This article has been tailored for individuals who are interested in learning more about multiple linear regression as a data analysis tool and its potential utility in pharmacy education research.

METHODOLOGICAL LITERATURE REVIEW

Within this section, the basic steps of regression are outlined, starting with correlational analysis before progressing to simple linear regression and multiple regression. Key terms needed to understand and interpret regressions are also discussed.

OUR RECOMMENDATIONS AND THEIR APPLICATIONS

Nine practical recommendations are provided to help researchers better understand and implement regression analyses in their studies.

POTENTIAL IMPACT

Regression analyses could be helpful in advancing pharmacy educational scholarship by enabling scholars to better understand variables that may predict specific outcomes such as student achievement or program retention.

Characteristics of studies of pharmacist services registered in ClinicalTrials.gov

OBJECTIVE

To examine the characteristics of studies of pharmacist services registered in ClinicalTrials.gov.

DESIGN

Cross-sectional study.

SETTING AND PARTICIPANTS

ClinicalTrials.gov and MEDLINE databases were searched to identify studies of pharmacist services. Registration information was obtained from the Aggregate Analysis of ClinicalTrials.gov (AACT) database. Studies were excluded if the ClinicalTrials.gov submission date was after December 31, 2018; there were no U.S. study sites; pharmacist services were not mentioned; or pharmacist involvement was limited to medication dispensing, randomization, or measuring study outcomes.

OUTCOME MEASURES

Characteristics of registered studies from ClinicalTrials.gov and AACT data, categories of pharmacist services, changes in registration and focus of pharmacist services over time, and relationships between funding source and result availability and between the focus of pharmacist services and types of outcomes and types of pharmacist interventions.

RESULTS

Overall 401 studies were identified for initial review, with 151 included for detailed review. Pharmacist services were the only intervention in 68 studies (45.0%), a separate intervention in 14 (9.3%), and part of a combined intervention in 40 (26.5%). In 29 studies (19.2%), pharmacist services were not the focus. Registered studies primarily were interventional, randomized, and open-label; included behavioral or "other" interventions; were conducted in the outpatient setting; and were sponsored by "other" sources. The most common health conditions were hypertension and diabetes. Only 29 of the 104 completed studies (27.9%) posted results. Clinical outcomes were the most common primary (80; 53.0%) and secondary outcomes (66; 58.9%). Medication management (69; 45.7%) and patient education or counseling (88; 58.3%) were the most common types of pharmacist interventions.

CONCLUSION

This analysis of ClinicalTrials.gov identified 151 studies of pharmacist services in the United States registered through the end of 2018. Given the breadth of the pharmacy services literature, there is room for improvement in the registration of these types of studies.

Updating conceptions of validity and reliability

Measurement validity is important when conducting research. This is as true for sociobehavioral research as for clinical research. Although the importance of validity is not new, its conceptualization has changed substantially in the past few decades. In the literature, there is a lack of consistency in how validity is presented. This may stem from a lack of awareness of the relatively recent changes in conceptualization of validity, the continued use of a historical framework in some educational texts, and/or the continued use of a historical framework in some training programs. This article presents a brief history of the conceptualization of validity including the progression from a perspective of related concepts of reliability and validity, to multiple types of validity, to a view of validity as a unitary concept supported by different types of evidence. This article closes by raising some important considerations about promoting use of a contemporary validity framework and associated terminology in current research, as well as in the education of future health-sciences researchers.

A Multi-School Validation of a Revised Scale for Assessing Cultural Competence in Pharmacy Students

Objective. To revise the Self-Assessment of Perceived Level of Cultural Competence (SAPLCC) instrument and validate it within a national sample of pharmacy students. Methods. A cross-sectional study design using a convenience sample of pharmacy schools across the country was used for this study. The target population was Doctor of Pharmacy (PharmD) students enrolled in the participating pharmacy programs. Data were collected using the SAPLCC. Exploratory factor analysis with principal components extraction and varimax rotation was used to identify the factor structure of the SAPLCC instrument. Results. Eight hundred seventy-five students from eight schools of pharmacy completed the survey. Exploratory factor analysis resulted in the selection of 14 factors that explained 76.6% of the total variance and the grouping of 75 of the 86-items in the SAPLCC into six domains: knowledge (16 items), skills (11 items), attitude (15 items), encounters (11 items), abilities (13 items), and awareness (9 items). Using a more diverse, representative sample of pharmacy students resulted in important revisions to the constructs of the SAPLCC and allowed the identification of a new factor: social determinants of health. Conclusion. The 75-item SAPLCC is a reliable instrument covering a full range of domains that can be used to measure pharmacy students' perceived level of cultural competence at baseline and upon completion of the pharmacy program.

Evaluating a measure of the research training environment in a sample of pharmacy residents

INTRODUCTION

While an important predictor of future research involvement, formal assessment of the quality of the research training environment in pharmacy residency training has not been examined. The objective of this study was to evaluate the psychometric properties of a modified version of the shortened form of the revised Research Training Environment Scale (RTES-R-S) in pharmacy residents.

METHODS

The original wording of the 18 items from RTES-R-S was modified to reflect pharmacy residency training. Data were collected as part of a larger study involving a random sample of pharmacy residents in the United States during the 2016-2017 residency year. Internal consistency was assessed with Cronbach's α. Confirmatory factor analysis was used to assess the fit of the factor structures examined previously during the original RTES-R-S development.

RESULTS

Based on confirmatory factor analysis, the preferred model proposed a single, second-order factor predicting nine factors reflecting Gelso's previously described ingredients of the research training environment. This model had acceptable fit indices and was statistically better than models without second-order factors. Cronbach's α for the global scale was 0.86, with the two subscales >0.7.

CONCLUSIONS

Minor rewording of an existing instrument to measure residents' perceptions of the quality of the research training environment demonstrated acceptable internal consistency. The factor structure of the recommended use proposed by the original developers of the RTES-R-S was supported in this sample of pharmacy residents. Continued work with additional samples is needed to generate additional validity evidence supporting the use of this tool in pharmacy residents.

Patient preferences for objective quality metrics during community pharmacy selection: A discrete choice experiment

BACKGROUND

Patients select healthcare providers and facilities based on a complex array of factors. Pharmacy-level quality metrics have been discussed as a way to help direct patients towards high-quality pharmacies. Limited research has been conducted on the potential impact of quality metrics on the pharmacy selection process.

OBJECTIVES

This study aimed to measure the relative strength of patient preferences for community pharmacy attributes and to describe associations between patient sociodemographic and health characteristics and pharmacy preferences.

METHODS

This study elicited preferences for pharmacy attributes using a discrete choice experiment presenting a scenario in which participants had moved to a new location and needed to select a pharmacy. Six attributes were selected based on published literature, expert opinion, and pilot testing feedback. Attributes were relationship-based (hours of operation, staff friendliness/courtesy, pharmacist communication, pharmacist willingness to establish a personal relationship) or competence-based (overall quality and a drug-drug interaction (DDI) specific quality metric). Participants responded to blocks of 10 random and 2 fixed choice tasks assigned by Sawtooth v9.2. Data were analyzed using conditional logit, and Hierarchical Bayes estimates of individual-level utilities were used to compare preferences across demographic subgroups.

RESULTS

Study participants expressed the strongest preferences for competence-based pharmacy attributes, including DDI-specific and overall quality measures (Attribute Importance Values: 40.3% and 31.3%, respectively). Women ascribed higher utility to 5-star DDI and overall quality ratings than men. Rural respondents and those with inadequate health literacy expressed stronger preferences for patient-pharmacist relationships than those in suburban areas and with adequate health literacy, respectively.

CONCLUSIONS

Respondents exhibited strong preferences for pharmacies with higher competence-based quality ratings, suggesting that they may perceive medication safety to be a key role of community pharmacists. Future research on patient expectations of and preferences for community pharmacies can inform ways to effectively encourage patient engagement with pharmacists to improve health outcomes.

Developing a Measure of Students' Potential Involvement in Scholarly Activities

BACKGROUND

Pharmacy schools must encourage a culture of inquiry so future pharmacists approach practice in a scholarly fashion.

OBJECTIVES

To develop an instrument measuring intentions to engage in various scholarly activities.

METHODS

Items representing scholarly activities relevant to pharmacists were developed. Exploratory factor analysis (EFA) was used to refine the list and identify underlying factors. Internal consistency was examined using Cronbach's alpha. Results were compared across student characteristics using unpaired t tests and 1-way analysis of variance. Key Findings: The initial list of 54 items was reduced to 31 after review and then administered to 381 pharmacy students (337 complete responses; 88% response rate). EFA suggested 3 factors with 4 items being removed due to low factor loadings. The final Potential Involvement in Scholarly Activities (PISA) instrument contained 27 items in 3 domains: research activities (13 items), professional writing (9 items), and practice evaluation/quality improvement (5 items). Cronbach's alphas were ≥0.85 for the total scale and domains. PISA scores were statistically higher for first-year students and those with previous research experience or post-graduate training interests.

CONCLUSIONS

Initial development of the PISA instrument suggested a 3-factor structure with acceptable internal consistency in this sample. Continued work is needed to examine the instrument in more diverse samples.

An Exploratory Survey of Incorporation of Gender- and Sex-related Differences in the PharmD Curricula

Introduction

Clinical presentation and treatment in many disease states vary due to sex- and gender-differences. Sex-related pharmacokinetic differences are particularly important for pharmacists. The Accreditation Council for Pharmacy Education (ACPE) currently has no standard for the inclusion of gender- and sex-related differences in the didactic PharmD curriculum, but encourages advanced pharmacy practice experiences (APPEs) to include diverse populations related to gender. The purpose of this survey is to explore faculty incorporation of gender and sex differences within the PharmD didactic curriculum in preparation for a nation-wide survey.

Methods

A survey was created to determine how many clinical topics incorporated gender- and sex-related differences and to what extent this information was discussed in the classroom. The survey link was emailed to pharmacotherapeutics and pharmacokinetics faculty at Midwestern University Chicago College of Pharmacy, University of Illinois at Chicago, Roosevelt University, Rosalind Franklin University, and Chicago State University. Chi square analyses were performed to examine relationships across participant responses.

Results

A total of 56 faculty members participated in the survey, resulting in a 20% response rate. Of these, 30 (54.5%) faculty indicated that they discussed gender- and sex-related differences in the subject area in which they teach. Approximately 33% of respondents found gender- and sex-related differences very clinically important. Gender- and sex- related differences were taught in a variety of subject areas, including cardiology, diabetes, and chronic obstructive pulmonary disease (COPD).

Conclusion

With no current standard, faculty members independently choose to include gender- and sex-related differences in their lecture topics and the extent of the discussion. Faculty should be aware of this lack of standardization and that they are independently responsible for including gender- and sex-related differences in their particular topics. Because the surveyed faculty find gender- and sex-related differences clinically important and literature suggests differences in medications depending on gender and sex, further research is planned to provide insight on a national level.

SGLT2 Inhibitors: A Systematic Review of Diabetic Ketoacidosis and Related Risk Factors in the Primary Literature

STUDY OBJECTIVE

Currently only minimal information is available regarding risk factors for the development of sodium glucose cotransporter-2 inhibitor (SGLT2i)-related diabetic ketoacidosis (DKA). We aim to identify individual patient characteristics associated with cases of SGLT2i-related DKA to better describe potential risk factors.

DESIGN

Systematic review of primary literature.

PATIENTS

Thirty-four case reports of patients with type 1 and type 2 diabetes mellitus who developed DKA while receiving an SGLT2i.

METHODS AND MAIN RESULTS

This systematic review investigated the relationship between SGLT2i and DKA in patients with diabetes. The existing literature was reviewed with a primary outcome to identify patient-specific factors contributing to the incidence of ketoacidosis in patients with diabetes who were treated with a SGLT2i. Numerous databases were searched to identify appropriate primary literature. Search terms included canagliflozin, dapagliflozin, empagliflozin, SGLT2, sodium glucose cotransporter-2 inhibitor, diabetic ketoacidosis, ketoacidosis, metabolic acidosis, and acidosis. Primary literature was analyzed via descriptive statistics. Thirty-four individual case reports were identified via the primary literature search. Two-thirds (25 cases) involved patients with a diagnosis of type 2 diabetes mellitus (T2DM). The average blood glucose on presentation for SGLT2i-induced DKA was 265.6 ± 140.7 mg/dl (14.7 ± 7.8 mmol/L), with common symptoms including nausea, vomiting, and abdominal pain. Common precipitating factors included patients who were diagnosed with T2DM and were subsequently found to have latent autoimmune diabetes of adulthood, patients who had recently undergone major surgery, or patients who had decreased or discontinued insulin. No cases were fatal.

CONCLUSION

In this review, episodes of DKA with SGLT2i use were characterized by lower blood glucose levels and were often caused by a precipitating factor. Understanding precipitating factors for SGLT2i-related DKA may help providers better identify patients at risk for development of DKA.

Design, analysis, and conclusions: Telling a consistent causal story

Pharmacy educators are dedicated to providing the best education to student pharmacists and post-graduate trainees. This involves developing and evaluating new educational approaches or activities, as well as working to understand better other factors that may affect student and program outcomes. Although we may not realize it, the idea of causality, or the presence of a cause-and-effect relationship, is embedded in much of what we do when engaging in pharmacy educational scholarship. Saying that an educational intervention is effective at improving test scores implies that the intervention caused the increase. Perhaps more subtly, a cause-and-effect relationship is implied when identifying poor interviewing skills as a factor that reduces the likelihood that a student will obtain a pharmacy practice residency. The extent to which causal claims can be made depends on appropriate study design and analysis. Similarly, the language used to present these claims is related to study design and analysis. Unfortunately, study designs used when evaluating educational approaches do not always align with the language used to report the results. This review provides a brief overview of current thinking related to causal inference. The role of study design and analysis in causal inference is also discussed along with recommendations for study design and analysis to facilitate making appropriate causal claims. After reading this article, readers should be able to select a study design that best aligns with their particular research question and report their findings in ways that are faithful to the strengths of the study design.

Potentially inappropriate medication use is associated with clinical outcomes in critically ill elderly patients with neurological injury

BACKGROUND

Limited data suggest that potentially inappropriate medications (PIMs) impact outcomes in critically ill elderly patients. No data are available on the association between PIM use as well as drug burden index (DBI), which is a measure of PIM use, and clinical outcomes in neurocritical care elderly patients. This study evaluates whether PIM use and a higher DBI are associated with poor clinical outcomes in neurocritical care elderly patients.

METHODS

PIMs were retrospectively identified in critically ill elderly patients admitted to the neuroscience intensive care unit (NSICU) from March to July 2011. DBI was calculated based on PIM doses. Relationships with clinical outcomes were evaluated.

RESULTS

PIMs were prescribed to a majority (81.3 %) of the 112 patients. Opioids were most commonly associated with a decrease in Richmond Agitation Sedation Scale (RASS) scores (56 % of PIM doses). Time to recovery was significantly longer in patients with a higher PIM burden (≤2 PIMs: 8 h, >2 PIMs: 29 h; p = 0.02). There was a significantly longer NSICU and hospital length of stay (9 vs 2; 15 vs 5 days; p < 0.0001) as well as a lower Glasgow Coma Scale score upon discharge (14 vs 15, p = 0.02) in patients with a higher DBI after 72 h of hospitalization. There was no difference in mortality.

CONCLUSIONS

PIM use and higher DBI scores were associated with poor clinical outcomes and longer lengths of stay. Further studies are needed to determine the impact of PIMs and DBI on mortality in neurocritical care elderly patients.

Risk of Fracture and the Concomitant Use of Bisphosphonates With Osteoporosis-Inducing Medications

Objective: To review the literature on the concomitant use of bisphosphonates and medications that can influence bone metabolism and potentially attenuate bisphosphonate antifracture efficacy. Data Sources: MEDLINE and CINAHL were searched for articles published in English through December 2014 using the following terms: bisphosphonates, bone density conservation agents, acid-suppressive therapy, levothyroxine, thiazolidinediones (TZDs), selective serotonin reuptake inhibitors (SSRIs), bone fractures. Study Selection and Data Extraction: Studies were included if they reported results of concomitant use of any listed medications with bisphosphonates and risk of fractures and focused on women. Articles that focused generally on the use of one of the listed medications and fractures without explicitly examining the potential antifracture efficacy or attenuation of bisphosphonates were excluded. Data Synthesis: A total of 6 relevant studies were identified. Four epidemiological studies reported a statistically significant dose-dependent increase in the risk of fractures when bisphosphonates and acid-suppressive drugs were used together. One post hoc analysis of clinical trial data suggested no attenuation of the antifracture effects of bisphosphonates when used concomitantly with acid-suppressive therapy. One study involving bisphosphonates and SSRIs noted a statistically significant association between fracture risk and SSRI use. No study examining TZDs or levothyroxine with bisphosphonates was identified. Conclusions: Existing research suggests potential attenuation of bisphosphonate antifracture efficacy among patients taking acid-suppressive medications. Based on their pharmacological actions, TZDs, SSRIs, and levothyroxine have similar implications. The paucity of evidence in the literature associating the attenuation of bisphosphonate antifracture efficacy when combined with other medications suggests that further investigation is needed.

Increase in Use of Vancomycin for Clostridium difficile Infection in US Hospitals

Clostridium difficile infection (CDI) is a potentially serious disease for which the epidemiology has recently changed, because of an emerging drug-resistant strain of the pathogen. Metronidazole and oral vancomycin are the primary treatment agents.2 Metronidazole has been historically favored as the first-line agent, partly to reduce the selection pressure for vancomycin-resistant enterococci (VRE), although metronidazole can also select for VRE. Vancomycin was traditionally reserved for metronidazole treatment failure or life-threatening disease. In a study conducted before emergence of the epidemic strain, vancomycin was reported to be superior for the initial treatment of severe CDI and for treatment of CDI that does not respond to metronidazole. Expert opinion calling for the use of vancomycin as first-line therapy, especially for severe CDI emergence of the epidemic strain, and reports of decreased metronidazole efficacy may have impacted CDI treatment practices. The purpose of this study was to characterize trends in CDI treatment in US hospitals.

Out-of-pocket costs and oral cancer medication discontinuation in the elderly

BACKGROUND

Cancer is a major cause of mortality and a major contributor to health care costs in the United States. An increasing number of cancer patients are treated with oral cancer therapy. Older patients are more likely to have cancer and to be at risk for adherence problems with oral cancer drugs. As a result of substantial cost sharing required for oral cancer drugs and the possibility of early entry into the Medicare Part D coverage gap, high out-of-pocket (OOP) drug costs could put elderly beneficiaries at great risk for delaying or discontinuing their cancer therapies.

OBJECTIVES

To (a) determine the OOP costs of oral cancer treatment and the numbers of patients that delay or discontinue oral cancer therapy and (b) examine the relationship between OOP costs and medication discontinuation or delay among older Medicare beneficiaries.

METHODS

A cross-sectional study was conducted using a 5% sample of Medicare beneficiaries who filled a prescription for imatinib, erlotinib, anastrozole, letrozole, or thalidomide during 2008. Patients included in the analysis sample did not receive drug subsidies, were aged 65 years or older, and were enrolled in Medicare Part D for all 12 months of 2008. Logistic regression was used to determine the association between OOP costs and medication discontinuation or delay.

RESULTS

Mean OOP costs per day were $2.96 for anastrozole, $3.10 for letrozole, $22.90 for imatinib, $28.35 for erlotinib, and $37.47 for thalidomide. The percentages of patients who discontinued or delayed oral cancer therapy were 58% for anastrozole, 64% for letrozole, 35% for imatinib, 61% for erlotinib, and 70% for thalidomide. For each $10 increase in OOP spending per month, the likelihood of discontinuation or delay increased 13%, 14%, and 20% for imatinib, erlotinib, and thalidomide users, respectively, but decreased 26% for anastrozole and letrozole users. 

CONCLUSION

Beneficiaries with higher OOP costs for the more expensive oral cancer drugs were more likely to discontinue or delay drug therapy.

Effect of Renin-Angiotensin system inhibition on cardiovascular events in older hypertensive patients with metabolic syndrome

OBJECTIVE

Metabolic syndrome (MetS) is associated with cardiovascular disease (CVD). Insulin resistance has been hypothesized as the underlying feature of MetS. Angiotensin converting enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) are widely used antihypertensives that may improve insulin sensitivity. The aim of the study is to evaluate the effect of ACEI/ARB on incident CVD events in older hypertensive patients with MetS.

MATERIALS/METHODS

We used the Cardiovascular Health Study, a prospective cohort study of individuals>65years of age to evaluate ACEI/ARB use and time to CVD events (including coronary and cerebrovascular events). The study included 777 subjects who had hypertension and ATP III-defined MetS, but free of CVD and diabetes at baseline. Cox regression models were used to evaluate the effect of ACEI/ARB as compared to other antihypertensives on the time to the first CVD events.

RESULTS

ACEI/ARB use was associated with a decreased risk of CVD events (adjusted HR=0.658, 95 % C.I. [0.436-0.993]) compared to other antihypertensives. When CVD endpoints were evaluated separately, use of ACEI/ARB was associated with lower rates of angioplasty and coronary events (HR of 0.129 and 0.530 respectively, with 95 % CI [0.017-0.952] and [0.321-0.875]).

CONCLUSIONS

ACEI/ARB use was associated with a lower risk of CVD events in older hypertensive patients with MetS, primarily due to a reduction in coronary events. The potential protective effect of ACEI/ARB on CVD events in older individuals with MetS will need further confirmation from prospective studies.

Medication risk factors associated with healthcare-associated Clostridium difficile infection: a multilevel model case-control study among 64 US academic medical centres

OBJECTIVES

The main objective of this study was to determine patient- and hospital-level medication risk factors associated with Clostridium difficile infection (CDI) occurrence among patients clustered within hospitals using a multilevel model.

METHODS

Patients with healthcare-associated (HA)-CDI were identified from among 64 academic medical centres in 2009. A frequency match was conducted; for each case, up to two controls were selected, matched on similar pre-infection length of stay and clinical service line. Patient- and hospital-level medication use, including antibacterial and gastric acid-suppressant agents, was assessed using a two-level logistic regression model.

RESULTS

A total of 5967 CDI cases and 8167 controls were included in the analysis. The odds of acquiring HA-CDI increased with the following medications [OR (95% CI)]: anti-methicillin-resistant Staphylococcus aureus agents [1.38 (1.22-1.56)]; third- or fourth-generation cephalosporins [1.75 (1.62-1.89)]; carbapenems [1.60 (1.44-1.79)]; β-lactam/β-lactamase inhibitor combinations [1.49 (1.36-1.64)]; vancomycin [1.73 (1.57-1.89)]; and proton pump inhibitors [1.43 (1.30-1.57)]. The odds of acquiring HA-CDI decreased with the following medications: clindamycin [0.74 (0.63-0.87)]; and macrolides [0.88 (0.77-0.99)]. Controlling for patient-level covariates, no hospital-level medication covariates that we analysed had statistically significant effects on HA-CDI. The odds of acquiring HA-CDI increased with the hospital proportion of patients aged ≥ 65 years [1.01 (1.00-1.02)].

CONCLUSIONS

We found several medications that were associated with the risk of patients developing HA-CDI, including β-lactam/β-lactamase inhibitor combinations, third- or fourth-generation cephalosporins, carbapenems, vancomycin, proton pump inhibitors and anti-methicillin-resistant S. aureus agents. There were no medication effects significant at the hospital level.

An active-learning laboratory on immunizations

OBJECTIVE

To implement and evaluate an active-learning laboratory activity to teach pharmacy students about influenza, pneumococcal, and shingles vaccines.

DESIGN

The laboratory session was divided into 6 immunization stations: 3 stations on influenza including a pediatrics station, and 1 station each for pneumococcal, shingles, and anaphylaxis.

ASSESSMENT

Although 118 of 123 (95.9%) students had completed an immunization training certificate prior to attending the laboratory, the average score on a pre-assessment to measure immunization knowledge and confidence was 56%. The post-assessment score was 87.4%. Students' confidence improved by 18.7% to 51.2% in each of the 5 areas assessed. Most respondents rated the activity overall as good or excellent on a post-activity evaluation.

CONCLUSION

An active-learning approach to teaching immunizations allowed students to gain knowledge in simulated real-world experiences and reinforced key concepts on influenza, pneumococcal, and shingles vaccines.

Warfarin-antibiotic interactions in older adults of an outpatient anticoagulation clinic

BACKGROUND

Several classes of drugs, such as antibiotics, may interact with warfarin to cause an increase in warfarins anticoagulant activity and the clinical relevance of warfarin-antibiotic interactions in older adults is not clear.

OBJECTIVE

The aim of this study was to determine the effect of oral antibiotics, such as amoxicillin, azithromycin, cephalexin, ciprofloxacin, levofloxacin, and moxifloxacin, on the international normalized ratio (INR) in patients ≥65 years on stable warfarin therapy. The secondary objective was to compare the effect of warfarin-antibiotic interactions on outcomes of overanticoagulation.

METHODS

Data for this retrospective cohort study were collected through a medical record review of patients in an outpatient anticoagulation clinic of a Veterans Affairs medical center. Patients aged ≥65 years on stable warfarin therapy and with at least 1 prescription of an oral antibiotic of interest during the period from January 1, 2003 to March 1, 2011 were included. A mixed-effects repeated-measures ANOVA model was used to determine the effect of antibiotics on the mean change in patients' INR. The Fisher exact test was used to determine the association between the antibiotics and secondary outcomes of overanticoagulation, using cephalexin as the control. Statistical significance was defined as a P value <0.05.

RESULTS

A total of 205 patients had 364 prescriptions for warfarin and antibiotics concomitantly, and there was a significant interaction between antibiotic and time (F(15, 358) = 1.9; P = 0.0221). Antibiotics with a significant increase in INR were amoxicillin (P = 0.0019), azithromycin (P < 0.0001), ciprofloxacin (P = 0.002), levofloxacin (P < 0.0001) and moxifloxacin (P < 0.0001). There was a significant association between type of antibiotic and secondary outcomes of overanticoagulation.

CONCLUSIONS

In older patients on stable warfarin therapy, antibiotics may lead to an increase in INR. However, this may not result in clinically significant outcomes of bleeding or hospitalization, suggesting that antibiotics may be prescribed for older adults taking warfarin as long as their INR is being routinely monitored.

A pharmacoepidemiologic analysis of the impact of calendar packaging on adherence to self-administered medications for long-term use

BACKGROUND

Calendar blister packaging (CBP) that incorporates a day or date feature is a simple medication packaging technology that is designed to improve medication adherence and persistence.

OBJECTIVE

This study was conducted to assess the effect of a new calendar packaging technology on prescription refill adherence and persistence for daily, self-administered, long-term medication use.

METHODS

Anonymized pharmacy dispensing data from a large US mass merchandiser were analyzed. This retrospective cohort study included people aged 18 to 75 years who filled prescriptions for oral lisinopril or enalapril (control group) at a study pharmacy during 1 year before and after the switch of lisinopril packaging from vials to CBP. Cohorts were stratified into new and prevalent medication users. We used linear and logistic regression modeling and propensity score matching to assess the impact of CBP on refill adherence, using medication possession ratio (MPR) and proportion of days covered (PDC), and persistence using length of therapy (LOT).

RESULTS

Our sample comprised 76,321 new users and 249,040 prevalent users. Across all user, medication, and packaging groups, the mean unadjusted LOT decreased in the follow-up year, possibly due to economic recession. The LOT decline was attenuated in the CBP cohort. After adjustment for covariates, CBP use in new and prevalent medication users was associated with significantly higher LOT and PDC but not MPR. The odds of achieving PDC ≥80% were higher by 15% in new users (odds ratio [OR] = 1.15; 95% CI, 1.09-1.21) and 12% in prevalent users (OR = 1.12; 95% CI, 1.09-1.15) who switched to CBP, compared with continued vial use.

CONCLUSIONS

CBP of medication prescribed for daily, self-administered, long-term use was associated with modest improvement in prescription refill adherence and persistence. An adherence strategy of even small effect size that is broadly implemented on a population level could significantly leverage therapeutic effect and provide substantial cumulative public health benefit. Clinical benefit, or harm, associated with use of CBP should be investigated. Usability assessments of CBP in patient subgroups may provide insight about differential impact on adherence and persistence.

Patients' Knowledge of and Practices Relating to the Disposal of Used Insulin Needles

Objective: To determine (1) how patients currently dispose of used insulin needles, (2) whether patients were educated about disposal of their used insulin needles, and (3) who educated patients about the disposal of their used insulin needles. Methods: A self-administered questionnaire was designed for this study. The survey assessed patient knowledge about disposal of used insulin needles and the patient-reported source and location of education about disposal techniques. The questionnaire was administered to a convenience sample of patients from four locations in Richmond, Virginia. Any patient who used insulin, was at least 18 years old, and was willing to complete the survey was eligible for inclusion. Results: Fifty responses were received with 40% indicating that education had been received on the disposal of used needles. From that 40%, nurses were identified as the source of education 60% of the time and pharmacists 25% of the time. Approximately 50% of the respondents reported disposing of used needles directly in the trash when at home. While away from home, 22% reported placing used needles in the trash, and 38% took them home for disposal. Conclusion: Patients are not consistently educated regarding the proper disposal of used needles. Health care practitioners should play a larger role in educating patients about the potential risks of inappropriate needle disposal and appropriate disposal methods. Future research is still needed to understand fully the magnitude of the problems associated with inappropriate needle disposal by patients. Type: Original Research

Using secondary data sources for pharmacoepidemiology and outcomes research

The increased availability of electronic medical records and administrative health care databases is adding to the popularity of pharmacoepidemiology and outcomes research studies. Despite their availability, practitioners may be reluctant to use these databases because they lack familiarity with database research in general. The basic principles of research are the same regardless of the data source, but there are a few special considerations. When using secondary data sources for research purposes, special care must be taken to select an appropriate source to ensure that relevant information is available to answer the research question at hand. Special attention must also be paid to selecting the appropriate codes to represent the outcomes and exposures of interest; therefore, a general understanding of coding schemes is necessary. Although time may be saved by not prospectively collecting data, the process of manipulating the data for analysis in secondary databases can be complex. Analysis of data from secondary sources may require special procedures to overcome the lack of randomization. By familiarizing themselves with these special issues, practitioners can use secondary sources to conduct studies that make valuable contributions to the improvement of patient care.

Evaluating student perceptions of a learner-centered drug literature evaluation course

OBJECTIVE

To evaluate pharmacy students' perceptions of a drug literature evaluation course implementing learner-centered teaching principles.

DESIGN

A drug literature evaluation course was redesigned to create a more learner-centered course through the inclusion of optional assignments, self-reflection opportunities, and a point-based grading system. A questionnaire was developed to assess student perceptions of the course and preferences for the learner-centered approach.

ASSESSMENT

One hundred two questionnaires were returned (94.4% response rate). The most highly rated items were those related to student control in determining their overall grade (4.7 +/- 0.6; mean +/- SD), less pressure to perform well on every examination or assignment (4.5 +/- 0.9), and a less stressful learning environment (4.4 +/- 1.0). Eighty-eight percent of students found that completing the optional assignments helped reinforce material presented in class.

CONCLUSIONS

Learner-centered methods were viewed favorably by students. The effects of learner-centered teaching on pharmacy education deserve further study.

Testing for allergic disease: parameters considered and test value

BACKGROUND

Test results for allergic disease are especially valuable to allergists and family physicians for clinical evaluation, decisions to treat, and to determine needs for referral.

METHODS

This study used a repeated measures design (conjoint analysis) to examine trade offs among clinical parameters that influence the decision of family physicians to use specific IgE blood testing as a diagnostic aid for patients suspected of having allergic rhinitis. Data were extracted from a random sample of 50 family physicians in the Southeastern United States. Physicians evaluated 11 patient profiles containing four clinical parameters: symptom severity (low, medium, high), symptom length (5, 10, 20 years), family history (both parents, mother, neither), and medication use (prescribed antihistamines, nasal spray, over-the-counter medications). Decision to recommend specific IgE testing was elicited as a "yes" or "no" response. Perceived value of specific IgE blood testing was evaluated according to usefulness as a diagnostic tool compared to skin testing, and not testing.

RESULTS

The highest odds ratios (OR) associated with decisions to test for allergic rhinitis were obtained for symptom severity (OR, 12.11; 95%CI, 7.1-20.7) and length of symptoms (OR, 1.46; 95%CI, 0.96-2.2) with family history having significant influence in the decision. A moderately positive association between testing issues and testing value was revealed (beta = 0.624, t = 5.296, p < or = 0.001) with 39% of the variance explained by the regression model.

CONCLUSION

The most important parameters considered when testing for allergic rhinitis relate to symptom severity, length of symptoms, and family history. Family physicians recognize that specific IgE blood testing is valuable to their practice.

Improving the safety of medication administration using an interactive CD-ROM program

PURPOSE

The impact of an interactive CD-ROM program on the rate of medication administration errors made by nurses was studied.

METHODS

This randomized, controlled, nonblinded study was conducted at three community hospitals. Study participants included 30 registered nurses who had at least one year of nursing experience in acute care and who worked on medical or medical-surgical units. Nurses were randomized to an intervention group that completed an interactive CD-ROM program on safe medication practices or to a control group. Direct observation was used to determine the baseline (preintervention) and postintervention error rates for both study and control groups. Three categories of errors were defined: deviation from safe administration practices (core 1), preparation and administration errors (core 2), and deviations from prescribed therapy (core 3). An error rate was calculated for each nurse, and the error rates for the study and control groups were based on the average error rate for the nurses in each group.

RESULTS

The majority of errors made were core 1 errors. The nurse-level data showed a significant decrease in core 1 error rates between baseline and postintervention periods. Core 2 error rates were higher in the postintervention period, but the increase was not significant. Very few core 3 errors were made by either group during either period.

CONCLUSION

An interactive CD-ROM enabled nurses to apply the information learned to identify errors in medication administration and improved adherence to safe medication administration practices.

Pseudomonas aeruginosa, Staphylococcus aureus, and fluoroquinolone use

Increasingly resistant bacteria in sickle cell disease patients indicate need to evaluate extendedspectrum cephalosporin therapy.

Few long-term multicenter investigations have evaluated the relationships between aggregate antimicrobial drug use in hospitals and bacterial resistance. We measured fluoroquinolone use from 1999 through 2003 in a network of US hospitals. The percentages of fluoroquinolone-resistant Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA) were obtained from yearly antibiograms at each hospital. Univariate linear regression showed significant associations between a hospital's volume of fluoroquinolone use and percent resistance in most individual study years (1999–2001 for P. aeruginosa, 1999–2002 for S. aureus). When the method of generalized estimating equations was used, a population-averaged longitudinal model incorporating total fluoroquinolone use and the previous year's resistance (to account for autocorrelation) did not show a significant effect of fluoroquinolone use on percent resistance for most drug-organism combinations, except for the relationship between levofloxacin use and percent MRSA. The ecologic relationship between fluoroquinolone use and resistance is complex and requires further study.