Treatment patterns and outcomes among adults with immune thrombocytopenia receiving pharmaceutical second-line therapies: a retrospective cohort study using administrative claims data

OBJECTIVES

To describe and compare real-world treatment patterns and clinical outcomes among individuals with immune thrombocytopenia (ITP) receiving second-line therapies (rituximab, romiplostim, or eltrombopag).

METHODS

A retrospective cohort study was conducted using a large administrative claims database (January 2013-May 2020) among continuously enrolled patients ≥18 years prescribed second-line ITP therapies. The index date was the date of the first claim of the study medications. Treatment patterns and outcomes were measured during the 12-month follow-up period. Inverse probability of treatment weighting (IPTW) was used to balance covariates across treatment groups. Multivariable logistic regression was used to compare treatment patterns and bleeding risk outcomes.

RESULTS

A total of 695 patients were included (rituximab, N = 285; romiplostim, N = 212; eltrombopag, N = 198). After IPTW, all baseline covariates were balanced. Compared to eltrombopag, patients in the rituximab cohort were 57% more likely to receive other ITP therapies (systematic corticosteroids or third-line therapies) during the follow-up period (odds ratio [OR] = 1.571, p = .030). There was no significant difference in the odds of receiving a different second-line therapy or experiencing a bleeding-related episode among three groups (p > .050). Patients in the romiplostim cohort were 69% more likely to receive rescue therapy compared to those in the rituximab cohort (OR = 1.688, p = .025).

CONCLUSION

Patients with ITP receiving rituximab were more likely to need other ITP therapies but did not experience higher risk of bleeding compared to those receiving eltrombopag or romiplostim. Benefits, risks, cost-effectiveness, and patient preference should all be considered in optimizing second-line therapy for ITP.

Pregnancy-related risk factors and receipt of postpartum care among Texas Medicaid pregnant enrollees: Opportunities for pharmacist services

BACKGROUND

The United States (US) experiences the highest rate of maternal mortality of similar countries. Postpartum care (PPC) focused on chronic disease management is potentially lifesaving, especially among pregnancies complicated by risk factors such as diabetes, hypertension, and mental health conditions (MHCs), which are conditions in which pharmacists can have an impact.

OBJECTIVE

To evaluate the prevalence of maternal mortality risk factors and their relationships with receipt of PPC among Texas Medicaid enrollees.

METHODS

A retrospective study included women with a delivery between 3/25/2014-11/1/2019 who were continuously enrolled in Texas Medicaid during the study period from 84 days pre-delivery to 60 days post-delivery. PPC was defined as ≥1 visit associated with postpartum follow-up services. Maternal mortality risk factors (diabetes, hypertension, and MHCs) during and after pregnancy were identified using diagnoses and medication utilization. Age, race/ethnicity, cesarean delivery, and preterm birth served as covariates. Multivariable logistic regression was used to address the study objective.

RESULTS

The sample (N = 617,010) was 26.5±5.7 years, primarily (52.8%) Hispanic, and 33.0% had cesarean deliveries and 9.3% had preterm births. Risk factor prevalence included: diabetes (14.0%), hypertension (14.3%), and MHCs during (6.3%) and after (9.1%) pregnancy. A majority (77.9%) had a PPC visit within 60 days of delivery. The odds of receiving PPC were 1.2 times higher for patients with diabetes (OR = 1.183; 95% CI = 1.161-1.206; P < 0.0001), 1.1 times higher for patients with hypertension (OR = 1.109; 95% CI= 1.089-1.130; P < 0.0001), and 1.1 times higher for patients with MHCs (OR=1.138; 95% CI = 1.108-1.170; P < 0.0001) than patients without, respectively.

CONCLUSION

Over three-quarters of Texas Medicaid pregnant enrollees received PPC within 60 days of delivery and risk factors were prevalent and predictive of receipt of PPC. Pharmacists can have a positive impact on maternal health by addressing hypertension, diabetes, and MHC risk factors.

Impact of adherence to hydroxyurea on health outcomes among patients with sickle cell disease

Although new pharmaceutical therapy options have recently become available, hydroxyurea is still the most commonly used and affordable treatment option for sickle cell disease (SCD). This study aimed to update the evidence on hydroxyurea adherence and its association with clinical and economic outcomes among individuals with SCD. This retrospective study used Texas Medicaid claims data from 09/2011-08/2016. Individuals were included if they had ≥1 inpatient or ≥2 outpatient SCD diagnoses, had ≥1 hydroxyurea prescription, were 2-63 years of age, and were continuously enrolled in Texas Medicaid between 6 months before and 1 year after the first hydroxyurea prescription fill date (index date). Hydroxyurea adherence (Medication Possession Ratio; MPR), vaso-occlusive crisis (VOC)-related outcomes, healthcare utilization and expenditures (SCD-related and all-cause) during the 1 year following the index date were measured. Bivariate and multivariable analyses were used to address the study objectives. Among 1035 included individuals (age: 18.8 ± 12.5 years, female: 52.1%), 20.9% were adherent to hydroxyurea (defined as MPR≥0.8). After adjustment for demographic and clinical characteristics, compared to being non-adherent, adhering to hydroxyurea was significantly associated with: a lower risk (Odds Ratio [OR] = 0.480, p = .0007) and hazard rate (Hazard Ratio [HR] = 0.748, p = .0005) of a VOC event, fewer VOC events (Incidence Rate Ratio [IRR] = 0.767, p = .0009), fewer VOC-related hospital days (IRR = 0.593, p = .0003), fewer all-cause and SCD-related hospitalizations (IRR = 0.712, p = .0008; IRR = 0.707, p = .0008, respectively) and emergency department visits (IRR = 0.768, p = .0037; IRR = 0.746, p = .0041, respectively), and lower SCD-related total healthcare expenditures (IRR = 0.796, p = .0266). Efforts to increase adherence to hydroxyurea could improve clinical and economic outcomes among individuals with SCD.

Part 1: Assessment of a virtual vs. onsite interview experience from the interviewee perspective

INTRODUCTION

The University of Texas at Austin College of Pharmacy transitioned the prospective student interview process for the incoming Class of 2025 from an onsite to a virtual Zoom interview. Differences between the two processes were assessed to determine utility of virtual interviews in the future. The objective was to compare preference, impact, and barriers to onsite and virtual interview experiences for prospective students.

METHODS

A survey to assess interviewees' opinions regarding the interview process, preference, and barriers to participation was emailed to candidates following the 2020-2021 interviews. Responses were evaluated using descriptive statistics, chi-square, Mann-Whitney U tests, and constant comparison thematic analysis.

RESULTS

The survey response rate was 40%. Of these, 54% preferred virtual interviews. Travel, lodging, and time were identified as barriers, with 80.5% of interviewees reporting at least one of these barriers. Respondents who chose time or had more barriers were more likely to prefer virtual interviews. Hosting a pre-interview day helped candidates prepare. Having a pharmacy student in the breakout room helped reduce stress. Interviewees were able to engage, showcase their personality, and learn the culture of the college despite the virtual nature.

CONCLUSIONS

From an interviewee perspective, the virtual interview process is a viable method to continue. Virtual interviews decrease barriers to access for candidates unable to attend onsite interviews while still allowing candidates to feel engaged, learn about the program, and have a positive experience. Pharmacy institutions may consider virtual interviews as an alternative or supplement to onsite interviews.

Part 2: Assessment of a virtual vs. onsite interview experience from the interviewer perspective

INTRODUCTION

The University of Texas at Austin College of Pharmacy transitioned from onsite interviews to virtual interviews in fall 2020. There is limited literature on whether the virtual format impacts an interviewer's assessment of a candidate. This study examined interviewer ability to assess candidates and barriers to participation.

METHODS

During the virtual interview process, interviewers utilized a modified multiple mini interview (mMMI) format to evaluate prospective college of pharmacy students. An 18-item survey was emailed to 62 interviewers from the 2020-2021 cycle. Virtual mMMI scores were compared to the previous year's onsite MMI scores. Descriptive statistics and thematic analysis were used to assess the data.

RESULTS

The response rate to the survey was 53% (33/62), and 59% of interviewers preferred virtual interviews to in-person. Interviewers stated that there were fewer barriers to participation, increased comfort, and more time with applicants during virtual interviews. For six of the nine attributes evaluated, ≥ 90% of interviewers reported that they were able to assess applicants as well as they did in person. When comparing virtual and onsite MMI scores, seven of nine attributes were statistically significantly higher in the virtual cohort than onsite.

CONCLUSIONS

From the perspective of interviewers, the virtual interview decreased barriers to participation and still allowed the ability to assess the candidates. While offering a choice of interview setting to interviewers could increase accessibility, the statistically significant difference in MMI scores between virtual and onsite formats suggests that additional standardization is required to offer both formats simultaneously.

Real-world opioid use among patients with migraine enrolled in US commercial insurance and risk factors associated with migraine progression

BACKGROUND: Migraineurs may be categorized as having episodic migraine (EM: < 15 headache days/month) or chronic migraine (CM: ≥ 15 days/month for > 3 months with ≥ 8 days/month having features of migraine). Opioid use has been linked to progression from EM to CM. OBJECTIVE: To describe the utilization of opioid prescriptions among patients with migraine, to determine the association between opioid use and migraine progression, and to explore demographic and clinical risk factors for migraine progression. METHODS: This retrospective cohort study used Optum's deidentified Clinformatics Data Mart Database from January 2015 to December 2018. Adult patients with a migraine diagnosis and continuous health plan enrollment were included. Opioid use was measured by average daily morphine equivalent dose, also known as morphine milligram equivalent (MME). Descriptive statistics were used to summarize the opioid use by patient demographic and clinical characteristics. A Cox proportional hazards model with stepwise selection was used to determine the risk factors of new-onset CM. RESULTS: Overall, 35% of patients with migraine (27,331 of 78,134) received prescription opioids (> 0 MME/day) during the 12-month follow-up period. Higher opioid dosage was found in patients who had CM and comorbidities of interest. Compared with patients with EM, patients with CM were twice as likely to receive at least 20 MME/day (CM 3.8% vs EM 1.9%) and had a higher median opioid day supply (CM 20 vs EM 10) during follow-up. About 7% of patients with CM with at least 1 opioid prescription had at least 50 MME/day in any 90-day period during follow-up. A significant association was found between MME level and the likelihood of new-onset CM. Additional significant risk factors of migraine progression included younger age, female sex, South and West regions, and having a diagnosis of medication overuse headache, depression, back pain, or fibromyalgia (all P < 0.05). CONCLUSIONS: Despite guidelines and the availability of more migraine-specific treatments, opioids are still commonly prescribed to patients with migraines in real-world practice, especially for those with CM. In this study population, a higher risk of new-onset CM was associated with receiving higher opioid doses.

Age-related healthcare services utilization for the management of sickle cell disease among treated Texas Medicaid patients

Objectives

To determine if there are age-related differences in sickle cell disease (SCD)-related healthcare utilization and to describe temporal healthcare utilization following an emergency department (ED) visit or hospitalization in treated SCD patient population.

Methods

Texas Medicaid prescription and medical claims from 1 September 2011 to 31 August 2016 were used. Patients aged 2–63 years with at least one inpatient or outpatient SCD medical claim and receiving one or more SCD-related medications (hydroxyurea, opioid or non-opioid analgesics) were included. The primary outcomes were utilization of SCD-related ED, inpatient and outpatient visits, all-cause prescription medications and type of SCD-related service at index and subsequent healthcare services. Age group was the primary independent variable.

Key findings

Overall (N = 2339), healthcare service utilization was relatively higher among age groups 2–12, 18–25 and 26–40. Proportions of patients having ≥1 ED and ≥1 inpatient visits, respectively, were significantly higher among age groups 2–12 (33.2%; 23.0%), 18–25 (29.3%; 25.1%) and 26–40 (32.3%; 22.4%) as compared with age group 13–17 (21.3%; 12.9%). The number of outpatient visits was highest among children aged 2–12 (4.5 ± 7.6, P &lt; 0.0001), while mean number of all-cause medications was the highest for older adults aged 41–63 (22.4 ± 16.3; P &lt; 0.0001). After an index ED visit (N = 598), outpatient visits were the most prevalent healthcare services. After an index hospitalization (N = 203), a subsequent hospitalization was the most prevalent healthcare service.

Conclusions

Texas Medicaid SCD patients receiving treatment have a high use of healthcare services, especially among children and young adults who are transitioning from childhood to adulthood. Age-specific interventions should be developed to promote optimal care transitions among young adults.

Age-related prescription medication utilization for the -management of sickle cell disease among Texas Medicaid patients

INTRODUCTION

Sickle cell disease (SCD) is associated with recurrent complications and healthcare burden. Although SCD management guidelines differ based on age groups, little is known regarding actual utilization of preventative (hydroxyurea) and palliative therapies (opioid and nonopioid analgesics) to manage complications. This study assessed whether there were agerelated differences in SCD index therapy type and SCD-related medication utilization.

DESIGN AND PATIENTS

Texas Medicaid prescription claims from September 1, 2011 to August 31, 2016 were retrospectively analyzed for SCD patients aged 2-63 years who received one or more SCD-related medications (hydroxyurea, opioid, or nonopioid analgesics).

OUTCOME MEASURES

The primary outcomes were SCD index drug type and medication utilization: hydroxyurea adherence, and days' supply of opioid, and nonopioid analgesics. Chi-square, analysis of variance, and Kruskal-Wallis tests were used.

RESULTS

Index therapy percentages for included patients (N = 2,339) were the following: opioids (45.7 percent), nonopioids (36.6 percent), dual therapy-opioids and nonopioids (11.2 percent), and hydroxyurea (6.5 percent), and they differed by age-groups (χ² = 243.0, p < 0.0001). Hydroxyurea as index therapy was higher among children (2-12:9.1 percent) compared to adults (26-40:3.7 percent; 41-63:2.9 percent). Opioids as index therapy were higher among adults (18-25:48.0 percent; 26-40:54.9 percent; 41-63:65.2 percent) compared to children (2-12:36.6 percent). Mean hydroxyurea adherence was higher (p < 0.0001) for younger ages, and opioid days' supply was higher for older ages.

CONCLUSIONS

Texas Medicaid SCD patients had low hydroxyurea utilization and adherence across all age groups. Interventions to increase the use of hydroxyurea and newer preventative therapies could result in better management of SCD-related complications and reduce the frequency of pain crises, which may reduce the need for opioid use.

Use of patient assessment skills in advanced pharmacy practice experiences

INTRODUCTION

Pharmacy programs are required to teach patient assessment (PA) skills. However, pharmacist workforce survey data indicates that limited opportunities exist for students to practice PA skills in real-world settings. The study objectives were to (1) assess how often PA skills are utilized by fourth-year pharmacy (P4) students on advanced pharmacy practice experiences (APPEs), (2) determine perceived competence in performing PA skills, and (3) examine relationships between grade-point average or post-graduation plans and the number of skills performed and between skill use frequency and self-reported competency.

METHODS

P4 students completed a questionnaire assessing 13 PA skills. Respondents performing a skill indicated frequency of use and rated their competence using a 5-point scale. Descriptive and bivariate statistics were reported.

RESULTS

The response rate was 81%. Measuring blood pressure (BP) (76%) and evaluating metered-dose inhaler (MDI) technique (74%) were most commonly performed. Peak-flow meter evaluation (6%) and lymph node examination (2%) were least commonly performed. Measuring BP and evaluating MDI technique had the highest competency ratings (4.6 + 0.7 for both). Lung (3.4 + 0.7) and heart (2.8 + 1) auscultation had the lowest competency ratings. Positive correlations were found between the frequency of skill use and self-reported competence for assessing MDI technique, peripheral pulses, and peripheral edema. No other findings were significant.

CONCLUSIONS

P4 students reported high perceived competency for PA skills performed frequently during APPEs. Preceptor education, requiring skill use, and encouraging students to proactively identify situations to use skills could increase opportunities for use of PA skills.

Efavirenz versus Protease Inhibitors in Patients with HIV: A Systematic Review and Meta-Analysis

Efavirenz- and protease inhibitor (PI)-based regimens remain viable options across the globe. We conducted a meta-analysis to compare the effectiveness of efavirenz-based regimens relative to PI-based regimens. EMBASE, PubMed, Cochrane, and clinicaltrials.gov were searched for randomized controlled trials conducted between 1987 and 2018 comparing efavirenz- with PI-based regimens. This was followed by title, abstract, and full-text screens. The quality of selected studies was assessed using the Cochrane risk of bias tool. Meta-analysis of the odds of virological suppression was conducted using the robust variance estimation approach. Fifteen studies met the inclusion criteria and totaled 6712 patients (efavirenz arm = 3339; PI arm = 3373), of which 1610 (24.0%) were females. Follow-up ranged from 24 to 144 weeks. Mean/median age ranged from 33 to 44 years. Mean/median baseline CD4 count ranged from 32 to 557 cells/mL while mean/median baseline viral load ranged from log10 4.5 to log10 5.5 copies/mL. Meta-analysis showed that patients receiving efavirenz-based regimens had 37% higher odds of virological suppression compared to PI-based regimens (odds ratio = 1.37, 95% confidence interval = 1.06-1.77, p = 0.02). The Egger test suggested the presence of publication bias (B = 0.927, t = 2.214, p = 0.033). The main threat to the quality of evidence was attrition bias. Regarding virological suppression, efavirenzbased regimens were more effective than PI-based regimens and, therefore, might be ideal for the management of treatment naïve patients with HIV in settings where NNRTIs and PIs are used.

Impact of emergency department opioid use on future health resource utilization among patients with migraine

OBJECTIVE

The purpose of this study was to evaluate the subsequent health resource utilization (HRU) between patients with migraine who received opioid medications at their emergency department (ED) visits ("opioid recipients") versus patients with migraine who did not receive opioid medications at their ED visits ("non-recipients").

BACKGROUND

Previous studies have found that opioid use is common among patients with migraine at emergency settings. Medication overuse, especially the use of opioids, is associated with migraine progression, which can ultimately lead to substantial health resource use and costs. There is limited evidence on opioid use specifically in emergency settings and its impact on future HRU among people with migraine.

METHOD

This retrospective cohort study used electronic health record data from the Baylor Scott & White Health between December 2013 and April 2017. Adult patients who had at least 6 months of continuous enrollment before (baseline or pre-index) and after (follow-up) the first date they had an ED visit with a diagnosis of migraine (defined as index date) were enrolled in the study. Opioid use and HRU during follow-up period between opioid recipients and non-recipients were summarized and compared.

RESULTS

A total of 788 patients met the eligibility criteria and were included in this study. During the 6-month follow-up period, compared to patients with migraine who were non-recipients at their index ED visits, opioid recipients had significantly more all-cause (3.6 [SD = 6.3] vs. 1.9 [SD = 4.8], p < 0.0001) and migraine-related (1.6 [SD = 4.2] vs. 0.6 [SD = 2.1], p < 0.0001) opioid prescriptions (RXs), and more all-cause (2.6 [SD = 4.3] vs. 1.6 [SD = 2.6], p = 0.002) and migraine-related (0.6 [SD = 1.4] vs. 0.3 [SD = 0.8], p = 0.001) ED visits. In addition, opioid recipients had higher risk of future migraine-related ED visits controlling for covariates (HR = 1.49, 95% CI = 1.09-2.03, p = 0.013). Factors that were significantly (p < 0.05) related to future migraine-related ED visits include previous opioid use (HR = 2.12, 95% CI = 1.24-3.65, p = 0.007), previous ED visits (HR = 2.38, 95% CI = 1.23-4.58, p = 0.010), hypertension (HR = 1.46, 95% CI = 1.07-2.00, p = 0.017), age between 45 and 64 years (HR = 0.68, 95% CI = 0.48-0.97, p = 0.033), female sex (HR = 1.82, 95% CI = 1.12-2.86, p = 0.015), and tobacco use disorder (HR = 1.45, 95% CI = 1.07-1.97, p = 0.017). Sub-analyses were restricted to the group of patients who were opioid naïve at baseline (n = 274, defined as having ≤1 opioid RXs during the 6-month pre-index period). Patients who were baseline opioid naïve but received opioids during their index ED visits were more likely to have future migraine-related ED visits compared to patients who were baseline opioid naïve and did not receive any opioids during their index ED visits, controlling for covariates (HR = 2.90, 95% CI = 1.54-5.46, p = 0.001).

CONCLUSION

Opioid use among patients with migraine presenting to the ED is associated with increased future HRU, which highlights the need for optimizing migraine management in emergency settings.

Prevalence of and Factors Associated with Gabapentinoid Use and Misuse Among Texas Medicaid Recipients

BACKGROUND AND OBJECTIVES

Gabapentin and pregabalin have been considered relatively safe opioid-sparing adjuncts for pain management. However, rising prescribing trends, presence of gabapentinoids in opioid-related overdoses, and the growing body of evidence regarding gabapentinoid misuse and abuse, have caused gabapentinoids to emerge as a drug class of public health concern. This study aimed to assess the prevalence of, and factors associated with gabapentinoid use and misuse.

METHODS

This retrospective study of Texas Medicaid data from 1/1/2012 to 30/8/2016 included patients aged 18-63 years at index date, with ≥ 1 gabapentinoid prescription, and continuously enrolled 6 months pre-index and 12 months post-index. Gabapentinoid misuse was defined as ≥ 3 claims exceeding daily doses of 3600 mg for gabapentin and 600 mg for pregabalin. Age, gender, concurrent opioid use, neuropathic pain diagnoses and gabapentinoid type were independent variables. Descriptive and inferential statistics were used.

RESULTS

Of included subjects (N = 39,000), 0.2% (N = 81) met study criteria for gabapentinoid misuse. Overall, the majority (76.4%) of gabapentinoid users were aged 41-63 years with a mean ± SD age of 48.2 ± 10.7 years. Those patients meeting the study criteria for gabapentinoid misuse were significantly younger (45.1 ± 11.0 vs 48.2 ± 10.7, p = 0.0084). Majority of the study sample was female (68.1%). However, a significantly higher proportion of males met the study criteria for gabapentinoid misuse compared to females (0.3% vs 0.2%, p = 0.0079). Approximately one-half (51.9%) of the study sample had neuropathic pain, and gabapentinoid misuse was significantly higher in neuropathic pain patients compared to those without neuropathic pain (0.3% vs 0.1%, p = 0.0078). Over three-quarters (77.4%) of patients were using gabapentin; however, gabapentinoid misuse was significantly higher among pregabalin users (0.4% vs 0.2%, p = 0.0003). Approximately 20% (17.3%) of gabapentinoid users had ≥ 90 days of concurrent opioid use. However, there was no significant difference in gabapentinoid misuse among patients with concurrent opioid use compared to patients without (0.3% vs 0.2%, p = 0.1440). Factors significantly associated with misuse included: male sex (odds ratio [OR] 0.486; 95% confidence interval [CI] 0.313-0.756; p = 0.0013); neuropathic pain (OR 2.065; 95% CI 1.289-3.308; p = 0.0026); and pregabalin versus gabapentin use (OR 2.337, 95% CI 1.492-3.661; p = 0.0002). Concurrent opioid use was not significantly associated with gabapentinoid misuse (OR 1.542, 95% CI 0.920-2.586; p = 0.1006).

CONCLUSION

Prevalence of gabapentinoid misuse was low (0.2%) among Texas Medicaid recipients. Younger age, male gender, neuropathic pain diagnosis and pregabalin use were significantly associated with higher levels of gabapentinoid misuse.

Use of a claims-based algorithm to estimate disease severity in the multiple sclerosis Medicare population

BACKGROUND/OBJECTIVE

To compare algorithm determined disease severity, risk of multiple sclerosis (MS) relapse, and MS-related hospitalization between the age-eligible and disability-eligible MS Medicare populations.

METHODS

Using the Humana claims dataset (2013 - 2015), patients were divided into Medicare age-eligible and disability-eligible groups. A previously developed algorithm, which used MS symptoms and healthcare utilization to categorize MS disease severity into three groups (low, moderate, high) at baseline was employed. Flexible parametric and Cox proportional hazard models were used to estimate the risk for MS relapses and MS-related hospitalizations among the MS disease severity groups and the two eligibility cohorts in the follow-up period.

RESULTS

Of the overall sample (N = 6,559), the majority (N = 4,813, 73.4%) were disability-eligible and in the low disease severity group (N = 4,468, 68.1%). In 10 of 16 disease severity algorithm predictors, the prevalence of these predictors was significantly (p<0.001) higher in the disability-eligible group compared to the age-eligible group. Survival analyses revealed that the disability-eligible group had a significantly higher risk for follow-up MS relapses and follow-up MS-related hospitalizations (HR = 1.79 [CI 1.54 - 2.08] and HR = 1.38 [CI 1.11-1.72], respectively) compared to those in the age-eligible group. When both eligibility and disease severity were considered in the model increases in hazard ratios corresponded generally to increases in disease severity. However, the type of Medicare eligibility does not appear to have a clear pattern across MS disease severity groups for either MS relapse or hospitalizations, CONCLUSION: The disability-eligible Medicare population had a significantly higher prevalence of MS comorbidities and higher MS severity scores at baseline. In addition, they had a higher risk for MS-related relapses and MS-related hospitalizations in the follow-up period. It is important to account for disability status when assessing disease severity and healthcare utilization.

Identifying subgroups within at-risk populations that drive late HIV diagnosis in a Southern U.S. state

We aimed to identify subgroups within age, racial/ethnic, and transmission categories that drive increased risk for late HIV diagnosis (LHD).

A 1996–2013 retrospective study of HIV-diagnosed individuals (N = 77,844) was conducted. The proportion of individuals with LHD (AIDS diagnosis within 365 days of HIV diagnosis) was determined, stratified by age, race/ethnicity, and transmission category. Logistic regression with interaction terms was used to identify groups/subgroups at risk for LHD during 1996–2001, 2002–2007, and 2008–2013.

Respectively, 78%, 27%, 38%, and 31% were male, White, Black, and Hispanic. Overall, 39% had LHD with a 6.7% reduction for each year increase (OR = 0.93, 95% CI = 0.93–0.94, p < 0.01). Older age was significantly associated with increased odds of LHD (OR range = 1.90–4.55). Compared to their White counterparts, all Hispanic transmission categories (OR range = 1.31–2.58) and only Black female heterosexuals and men who have sex with men (MSM) (OR range = 1.14–1.33) had significantly higher odds of LHD during 1996–2001 and/or 2002–2007. Significance was limited to Hispanic MSM (all age categories), MSM/IDUs (30–59 years), and heterosexuals (18–29 years) and Black MSM (30–39 years) during 2008–2013.

Older individuals and Hispanics (driven by MSM) are at increased risk for LHD. HIV testing interventions directed at seniors and Hispanic MSM can further reduce rates of LHD.

Association of depression with adherence to breast cancer screening among women aged 50 to 74 years in the United States

RATIONALE, AIMS, AND OBJECTIVES

Previous research has shown inconsistent results regarding the association of depression and screening mammography use behaviours. This study aimed to assess the relationship between women's depression and mammography adherence.

METHODS

This cross-sectional study used data from the 2016 Behavioural Risk Factor Surveillance System and employed the Health Belief Model (HBM). The primary independent variable was the presence of depression. The dependent variable was adherence to biennial screening mammography based on the US Preventive Services Task Force guidelines. Demographic characteristics and HBM constructs were included as covariates. Univariate and multivariate logistic regressions were used.

RESULTS

A total of 139 550 women were included (weighted n = 48 712 531). Among them, 23.1% reported the presence of depression (n = 32 247). The unadjusted odds ratio (OR) for mammography use in women with depression was 0.85 (95% confidence interval [CI], 0.80-0.91, P < .001) compared with women without depression, and the probability of mammography use was significantly lower in women with depression (76.3%; 95% CI, 75.4-77.3) compared with women without depression (79.1%; 95% CI, 78.5-79.6). However, the adjusted OR was not statistically significant when controlling for demographic and HBM characteristics (1.02; 95% CI, 0.93-1.11, P = .698), and the probabilities of mammography use were similar between women with depression (80.1%; 95% CI, 79.0-81.3) and without depression (79.9%; 95% CI, 79.2-80.6).

CONCLUSIONS

Depression itself was related to nonadherence with mammography screening guidelines. However, after controlling for demographic and HBM characteristics, depression was not associated with adherence with mammography screening guidelines.

Patterns and predictors of opioid use among migraine patients at emergency departments: A retrospective database analysis

Objectives

To compare medication use and health resource utilization between migraineurs with evidence of opioid use at emergency department visit versus no opioid use at emergency department visit, and to examine predictors of opioid use among migraineurs at emergency department visits.

Methods

This was a retrospective study using REACHnet electronic health records (December 2013 to April 2017) from Baylor Scott & White Health Plan. The index date was defined as the first migraine-related emergency department visit after ≥6 months of enrollment. Adult patients with a migraine diagnosis and ≥6 months of continuous enrollment before and after their index dates were included. Descriptive statistics and bivariate analyses were used to compare medication use and health resource utilization between opioid users and non-opioid users. Multivariable logistic regression was used to examine predictors of opioid use at emergency department visits.

Results

A total of 788 migraineurs met eligibility criteria. Over one-third (n = 283, 35.9%) received ≥1 opioid medication during their index date emergency department visit. Morphine (n = 103, 13.1%) and hydromorphone (n = 85, 10.8%) were the most frequently used opioids. Opioid users had more hospitalizations and emergency department visits during their pre-index period (both p < 0.05). Significant ( p < 0.05) predictors of opioid use at emergency department visits included past migraine-related opioid use (2–4 prescriptions, Odds Ratio = 1.66; 5–9 prescriptions, Odds Ratio = 2.12; ≥10 prescriptions, Odds Ratio = 4.43), past non-migraine-related opioid use (≥10 prescriptions, Odds Ratio = 1.93), past emergency department visits (1–3 visits, Odds Ratio = 1.84), age (45–64 years, Odds Ratio = 1.45), and sleep disorder (Odds Ratio = 1.43), controlling for covariates.

Conclusion

Opioids were commonly given to migraineurs at emergency departments. Previous opioid use, health resource utilization, age, and specific comorbidities might be used to identify migraineurs with a high risk of opioid use.

Gender and ethnic differences in rates of immune reconstitution, AIDS diagnosis, and survival

In this work, we use 2011-2013 Texas HIV surveillance data (N=2,175) and apply hierarchical linear and Cox regression modeling to characterize the association of gender and race/ethnicity with rate of immune recovery and determine whether immune recovery contributes to gender and racial/ethnic disparities in AIDS diagnosis and survival. The associations between gender and rate of immune recovery and between race/ethnicity and rate of immune recovery were not statistically significant (p > 0.05). In the multivariate survival analyses, there was no statistically significant association between gender and AIDS diagnosis (Adjusted Hazard Ratio (AHR) = 1.06, p = 0.61, 95%=0.85-1.32) and between race/ethnicity and AIDS diagnosis (Blacks vs Whites: AHR = 1.10, p = 0.24, 95% CI = 0.94-1.30; Hispanics vs Whites: AHR = 1.06, p = 0.46, 95% CI = 0.91-1.24). Similarly, there were no statistically significant associations with death (males vs females: AHR = 0.88, p = 0.73, 95% CI = 0.43-1.81; Blacks vs Whites: AHR = 0.68 p = 0.25, 95% CI = 0.36-1.30; Hispanics vs Whites: AHR = 0.96, p = 0.88, 95% CI = 0.55-1.67). However, the direction of the point estimates were in the reverse direction when compared to the rate of immune recovery or the AIDS diagnosis models. Our findings suggest that differences in rate of immune recovery may better explain disparities in AIDS diagnosis than disparities in survival. Future studies with longer follow-up may potentially generate statistically significant results.

Comprehensive health management pharmacist-delivered model: impact on healthcare utilization and costs

OBJECTIVES

To (1) examine the impact of the Comprehensive Health Management Patient Service (CHaMPS) on unplanned hospital admissions and emergency department (ED) visits in patients with chronic conditions, (2) describe the number and type of pharmacist interventions, and (3) determine the cost savings of CHaMPS.

STUDY DESIGN

Retrospective, cross-sectional design with a matched comparator group.

METHODS

CHaMPS integrated pharmacists within family medicine clinics to optimize medication use among patients with chronic conditions. Outcomes were the change in unplanned hospital admissions and ED visits from baseline to 180- and 365-day postintervention periods between the CHaMPS and propensity-matched comparator groups. Descriptive, bivariate (t tests and McNemar tests), and multivariate (general linear models) statistical analyses were used. Pharmacist interventions are reported and a cost-benefit analysis was conducted.

RESULTS

A total of 624 patients (312 in the CHaMPS group and 312 in the comparator group) were included. Unplanned hospital admissions decreased in the CHaMPS group and increased in the comparator group (not significant). ED visits remained stable in the CHaMPS group but increased significantly in the comparator group, resulting in a significant mean change in ED visits between the groups at the 180- and 365-day postintervention periods (P = .03 for both periods). Pharmacists provided a total of 5705 medication-related problem, education, and medication reconciliation interventions (18.3 per patient). The benefit-cost ratio ranged from 2.1:1 to 2.6:1.

CONCLUSIONS

CHaMPS achieved its goals by demonstrating a positive impact on ED visits and a benefit-cost ratio greater than 1.0. The cost savings of the embedded pharmacist model are most beneficial from a payer perspective or an accountable care organization approach to healthcare.

Comparison of Prostaglandin Analog Treatment Patterns in Glaucoma and Ocular Hypertension

BACKGROUND

Prostaglandin analogs (PGAs) are considered an initial therapy to manage increased intraocular pressure (IOP) for patients with glaucoma. When the initial PGA treatment fails to lower IOP adequately, the patient may add or change medications or have surgery/laser treatment.

OBJECTIVE

To compare medication adherence, duration of therapy, and treatment patterns among 3 PGAs-latanoprost, travoprost, and bimatoprost-as initial therapies for patients with glaucoma or ocular hypertension.

METHODS

This was a retrospective cohort study using administrative claims data. The cohort consisted of patients newly diagnosed with glaucoma or ocular hypertension with at least 1 prescription claim for latanoprost, travoprost, or bimatoprost and enrolled in a Medicare Advantage plan between 2007 and 2012. The 24-month medication possession ratio (MPR) was used to measure medication adherence. Discontinuation of first-line PGA therapy was defined as nonpersistence (90-day gap allowance) of the index PGA or a change in therapy during the 24-month follow-up period. Types of second-line therapy (i.e., switch, addition, and surgery) were identified. The 1:1:1 propensity score matching was used.

RESULTS

Patients who met the inclusion criteria were propensity score matched, resulting in 1,296 patients per PGA group. Latanoprost users showed higher adherence (50.1%) than travoprost (48.8%) and bimatoprost (43.0%) users. The latanoprost and travoprost groups had significantly higher MPRs than bimatoprost (P < 0.0001). The latanoprost group showed significantly longer duration of first-line therapy (372 days) than the bimatoprost group (343 days; P = 0.003) but not the travoprost group (361 days). After controlling for demographic and clinical characteristics, a Cox proportional hazards model showed that the travoprost and bimatoprost groups had a higher risk of discontinuation of first-line therapy than the latanoprost group (P < 0.0001). The percentage of patients continuing on the index PGA without treatment pattern change (i.e., switches, additions, and surgery) was higher for latanoprost users (52.9%) compared with travoprost (39.0%) or bimatoprost users (42.1%; P < 0.001).

CONCLUSIONS

Patients who used latanoprost as their initial therapy were more likely to adhere and persist to the index PGA compared with bimatoprost users. The latanoprost group demonstrated a lower risk of discontinuing first-line therapy than the travoprost and bimatoprost groups. The results may assist ophthalmologists in determining the optimal management of this patient population with respect to treatment patterns.

DISCLOSURES

No outside funding supported this study. All authors except Heo and Nair are employed by The University of Texas at Austin College of Pharmacy. Heo was with the Health Outcomes Division, The University of Texas at Austin College of Pharmacy during a portion of this study and is employed by Genesis Research. Nair is employed by Humana. The authors have no financial relationships relevant to this article to disclose. This study was presented as a poster at the 2016 International Society for Pharmacoeconomics and Outcomes Research Annual Meeting, May 2016, Washington, DC.

Examining the heterogeneity of treatment patterns in attention deficit hyperactivity disorder among children and adolescents in the Texas Medicaid population: modeling suboptimal treatment response

Objectives: To examine suboptimal responses (SR) in attention deficit hyperactivity disorder (ADHD) among pediatric patients in the Texas Medicaid program receiving osmotic-release oral system methylphenidate (OROS-MPH) or lisdexamfetamine (LDX) and apply an SR prediction model to identify patients most likely to experience an SR to either OROS-MPH or LDX therapies. Methods: A retrospective cohort study was conducted using Texas Medicaid claims data of ADHD children and adolescents (6-17 years of age) initiating OROS-MPH or LDX. Primary SR endpoints were drug discontinuation, switching, and augmentation 12-months post-ADHD drug initiation. Logistic regression models were developed to predict SR to OROS-MPH and LDX in 1:1 matched groups of children and adolescent cohorts. Results: A total of 3,633 children and 1,611 adolescents were matched for each cohort. SR was observed among more children (76.4% vs 72.3%; p < 0.001) and adolescents (82.7% vs 78.2%; p = 0.002) initiating OROS-MPH compared to LDX. Patient sub-groups with the highest predicted risk of OROS-MPH SR experienced significantly lower observed SR rates (p < 0.05) when initiating LDX (children: 80.6% for OROS-MPH vs 75.8% for LDX; OR = 0.75, 95% CI = 0.60-0.94; adolescents: 87.2% for OROS-MPH vs 80.6% for LDX; OR = 0.61, 95% CI = 0.41-0.89). For patients with highest predicted SR rates to LDX, observed SR rates were not significantly different between patients initiating LDX or OROS-MPH. Conclusions: This study demonstrated how a personalized medicine approach using administrative claims data can be used to identify sub-groups of child and adolescent ADHD patients with different risks for suboptimal response with OROS-MPH or LDX in a Medicaid population.

Associations Between Treatment Satisfaction, Medication Beliefs, and Adherence to Disease-Modifying Therapies in Patients with Multiple Sclerosis

Background

Adherence to disease-modifying therapy (DMT) remains problematic for many patients with multiple sclerosis (MS). An improved understanding of factors affecting DMT adherence may inform effective interventions. This study examined associations between treatment satisfaction, medication beliefs, and DMT adherence.

Methods

A survey was mailed in 2016 to 600 adult patients with relapsing-remitting MS taking an injectable or oral DMT. Patients were sampled from the North American Research Committee on Multiple Sclerosis (NARCOMS) Registry. The survey measured self-reported DMT adherence (doses taken divided by doses prescribed during previous 2-week period-adherence ≥0.80), DMT satisfaction using the Treatment Satisfaction Questionnaire for Medication version II, medication beliefs using the Beliefs About Medicines Questionnaire, and demographic and clinical covariates. Relationships between variables were examined using multivariate logistic regression.

Results

Final analyses included 489 usable surveys. Mean ± SD participant age was 60.5 ± 8.3 years. Most respondents were white (93.8%), female (86.6%), taking an injectable DMT (66.9%), and adherent to DMT (92.8%). Significant predictors of DMT adherence were age (odds ratio [OR], 1.086; 95% CI, 1.020-1.158; P = .011), type of DMT (oral vs. injectable; OR, 23.350; 95% CI, 2.254-241.892; P = .008), and DMT experience (naive vs. experienced; OR, 2.831; 95% CI, 1.018-7.878; P = .046).

Conclusions

In patients with MS sampled from a patient registry, treatment satisfaction and medication beliefs were not significantly associated with DMT adherence. Based on significant predictors, younger patients, patients taking injectable DMTs, and patients with previous experience with another DMT(s) are at higher risk for nonadherence. Future research is warranted to assess relationships between variables in more diverse MS populations.

Operation Naloxone: Overdose prevention service learning for student pharmacists

BACKGROUND AND PURPOSE

A service learning program for student pharmacists was developed to train other university students to respond effectively to opioid overdoses with naloxone. Assessments were analyzed to determine the effect of program participation on student pharmacists' overdose-related knowledge retention and harm reduction attitudes.

EDUCATIONAL ACTIVITY AND SETTING

Student pharmacists were invited to attend a 90-min train-the-trainer seminar to obtain foundational knowledge regarding opioid overdose risk, symptoms, and response. Attendees were eligible to participate in a series of 10 community outreach events to educate university students. These two-hour events included a 30-min team huddle, 60-min workshop, and 30-min team debrief. Student pharmacists were asked to complete a follow-up assessment to evaluate knowledge retention and harm reduction attitudes.

FINDINGS AND DISCUSSION

Responses from students who participated in community outreach events (intervention) were compared to those who only attended the train-the-trainer seminar (control). A total of 116 subjects attended a train-the-trainer seminar and 94 completed the follow-up assessment. Thirty-six subjects voluntarily participated in at least one community outreach event while 58 did not participate. The intervention group demonstrated superior knowledge retention compared to the control group (p < 0.001). Cumulative harm reduction attitudes did not differ between groups (p = 0.89). The intervention group exhibited more positive attitudes regarding naloxone access for individuals who use illicit opioids (p = 0.015).

SUMMARY

The Operation Naloxone service learning program enabled student pharmacists to engage with their community while reinforcing overdose-related knowledge. Student pharmacists exhibited progressive attitudes regarding harm reduction interventions.

Direct oral anticoagulant prescription trends, switching patterns, and adherence in Texas Medicaid

OBJECTIVES

To compare prescription trends, costs, switch patterns, and mean adherence among oral anticoagulants in the Texas Medicaid population.

STUDY DESIGN

Secondary analysis of Medicaid prescription claims data.

METHODS

All oral anticoagulant prescriptions for patients aged 18 to 63 years with 1 or more prescription claims for an oral anticoagulant from July 1, 2010, to December 31, 2015, were included in utilization and expenditure trend analyses. Switch patterns and adherence, measured by the proportion of days covered (PDC), were analyzed over 1 year for patients newly initiated on oral anticoagulant therapy.

RESULTS

Over the 5.5-year study period, direct oral anticoagulant (DOAC) use increased steadily and the proportion of oral anticoagulant prescription expenditures accounted for by DOACs increased substantially. By December 2015, DOACs accounted for one-third of anticoagulant prescription claims and more than 90% of total oral anticoagulant prescription expenditures. The mean cost per prescription was 30 times higher for DOACs than warfarin. A higher proportion of patients with a DOAC as an index drug switched drugs. The overall mean ± SD PDC was 0.71 ± 0.21, with no significant differences among patients on dabigatran, rivaroxaban, and apixaban. Using a PDC cutoff point of 0.80 to indicate adherence (vs nonadherence), 42% of patients were categorized as adherent.

CONCLUSIONS

Texas Medicaid prescription data show a gradual increase in DOAC use with a rapid increase in prescription expenditures. Further exploration of the causes of higher switch rates among DOAC initiators compared with warfarin initiators and nonadherence to DOACs is needed to understand the challenges related to DOAC adoption in practice and to improve patient outcomes.

Emerging multidrug resistance in community-associated Staphylococcus aureus involved in skin and soft tissue infections and nasal colonization

Background

Staphylococcus aureus is a major pathogen causing significant morbidity and mortality worldwide. The emergence of MDR S. aureus strains in the community setting has major implications in disease management. However, data regarding the occurrence and patterns of MDR community-associated S. aureus sub-clones is limited.

Objectives

To use whole-genome sequences to describe the diversity and distribution of resistance mechanisms among community-associated S. aureus isolates.

Methods

S. aureus isolates from skin and soft tissue infections (SSTIs) and nasal colonization were collected from patients within 10 primary care clinics from 2007 to 2015. The Illumina Miseq platform was used to determine the genome sequences for 144 S. aureus isolates. Phylogenetic and bioinformatics analyses were performed using in silico tools. The resistome was assembled and compared with the phenotypically derived antibiogram.

Results

Approximately one-third of S. aureus isolates in the South Texas primary care setting were MDR. A higher proportion of SSTI isolates were MDR in comparison with nasal colonization isolates. Individuals with MDR S. aureus SSTIs were more likely to be African American and obese. Furthermore, S. aureus populations are able to acquire and lose antimicrobial resistance genes. USA300 strains were differentiated by a stable chromosomal mutation in gyrA conferring quinolone resistance. The resistomes were highly predictive of antimicrobial resistance phenotypes.

Conclusions

These findings highlight the high prevalence and epidemiological factors associated with MDR S. aureus strains in the community setting and demonstrate the utility of next-generation sequencing to potentially quicken antimicrobial resistance detection and surveillance for targeted interventions.

Predicting performance in health professions education programs from admissions information - Comparisons of other health professions with pharmacy

BACKGROUND

The goal of the present review was to assess the state of performance prediction in healthcare programs generally, versus performance prediction in pharmacy schools, using didactic and non-didactic admissions measures. This is important because clinical success represents a combination of skills that are not fully predicted by either type of measure alone.

METHODS

PubMed searches were conducted focusing on work published from 2000 onwards, since it is during this period that non-didactic admissions measures have come to be incorporated into the applicant evaluation process. Relevant free full text papers available were used. When these papers were not available by direct import into EndNote, we went directly to the journal to try to retrieve the paper.

RESULTS

We acknowledge that health professions programs have been successful in recruiting excellent candidates into their schools. However, based on the modest amount of healthcare program performance accounted for by didactic measures, admissions committees should consider expanding their holistic evaluation of applicants. Schools would benefit from using two-step screening phases in the application process - perhaps evaluating didactic potential in phase 1 and experiential in phase 2. Using combination measures throughout the admission process should help ensure admission of students more likely to be successful throughout their healthcare practice.

IMPLICATIONS

Future investigations of the prediction of healthcare program performance by formal combinations of didactic and non-didactic admissions measures are imperative. In addition, it is likely that combination admission measures will incorporate more metrics of critical thinking than do simpler approaches. Furthermore, systematic evaluation of the usefulness of the two-step screening approaches to admissions used by most competitive health professions programs also needs to be done.

Shift to community-onset Clostridium difficile infection in the national Veterans Health Administration, 2003-2014

BACKGROUND

Clostridium difficile infection (CDI) occurs frequently in inpatient settings; however, community-onset cases have been reported more frequently in recent years. This study evaluated hospital-onset and community-onset CDI in the national Veterans Health Administration (VHA) population over a 12-year period.

METHODS

This was a retrospective cohort study of all adult VHA beneficiaries with CDI between October 1, 2002, and September 30, 2014. Data were obtained from the Veterans Affairs Informatics and Computing Infrastructure. CDI was categorized into community-associated CDI (CA-CDI); community-onset, health care facility-associated CDI; and health care facility-onset CDI (HCFO-CDI). Each type was described longitudinally and was assessed as an independent risk factor for health outcomes using multivariable logistic regression.

RESULTS

Overall, 30,326 patients with a first CDI episode were included. HCFO-CDI was the predominant type (60.2%), followed by CO-HCFA-CDI (20.6%) and CA-CDI (19.2%). The proportion of patients with HCFO-CDI decreased from 73.5% during fiscal year 2003 to 53.2% during fiscal year 2014, whereas CA-CDI increased from 8.3% to 26.7%. HCFO-CDI was a positive predictor of severe CDI (odds ratio [OR], 1.71; 95% confidence interval [CI], 1.59-1.84) and 30-day mortality (OR, 1.46; 95% CI, 1.32-1.61), but a negative predictor of 60-day recurrence (OR, 0.41; 95% CI, 0.37-0.46).

CONCLUSIONS

HCFO-CDI was the predominant CDI type. The proportion of patients with CA-CDI increased and HCFO-CDI decreased in recent years. Patients with HCFO-CDI experienced higher rates of severe CDI and mortality.

Derivation and Validation of a Clostridium difficile Infection Recurrence Prediction Rule in a National Cohort of Veterans

STUDY OBJECTIVE

Prior studies have identified risk factors for recurrent Clostridium difficile infection (CDI), but few studies have integrated these factors into a clinical prediction rule that can aid clinical decision-making. The objectives of this study were to derive and validate a CDI recurrence prediction rule to identify patients at risk for first recurrence in a national cohort of veterans.

DESIGN

Retrospective cohort study.

DATA SOURCE

Veterans Affairs Informatics and Computing Infrastructure.

PATIENTS

A total of 22,615 adult Veterans Health Administration beneficiaries with first-episode CDI between October 1, 2002, and September 30, 2014; of these patients, 7538 were assigned to the derivation cohort and 15,077 to the validation cohort.

MEASUREMENTS AND MAIN RESULTS

A 60-day CDI recurrence prediction rule was created in a derivation cohort using backward logistic regression. Those variables significant at p<0.01 were assigned an integer score proportional to the regression coefficient. The model was then validated in the derivation cohort and a separate validation cohort. Patients were then split into three risk categories, and rates of recurrence were described for each category. The CDI recurrence prediction rule included the following predictor variables with their respective point values: prior third- and fourth-generation cephalosporins (1 point), prior proton pump inhibitors (1 point), prior antidiarrheals (1 point), nonsevere CDI (2 points), and community-onset CDI (3 points). In the derivation cohort, the 60-day CDI recurrence risk for each score ranged from 7.5% (0 points) to 57.9% (8 points). The risk score was strongly correlated with recurrence (R²  = 0.94). Patients were split into low-risk (0-2 points), medium-risk (3-5 points), and high-risk (6-8 points) classes and had the following recurrence rates: 8.9%, 20.2%, and 35.0%, respectively. Findings were similar in the validation cohort.

CONCLUSION

Several CDI and patient-specific factors were independently associated with 60-day CDI recurrence risk. When integrated into a clinical prediction rule, higher risk scores and risk classes were strongly correlated with CDI recurrence. This clinical prediction rule can be used by providers to identify patients at high risk for CDI recurrence and help guide preventive strategy decisions, while accounting for clinical judgment.

Economic Burden of Attention-Deficit/Hyperactivity Disorder among Pediatric Patients in the United States

OBJECTIVES

To determine the adjusted incremental total costs (direct and indirect) for patients (aged 3-17 years) with attention-deficit/hyperactivity disorder (ADHD) and the differences in the adjusted incremental direct expenditures with respect to age groups (preschoolers, 0-5 years; children, 6-11 years; and adolescents, 12-17 years).

METHODS

The 2011 Medical Expenditure Panel Survey was used as the data source. The ADHD cohort consisted of patients aged 0 to 17 years with a diagnosis of ADHD, whereas the non-ADHD cohort consisted of subjects in the same age range without a diagnosis of ADHD. The annual incremental total cost of ADHD is composed of the incremental direct expenditures and indirect costs. A two-part model with a logistic regression (first part) and a generalized linear model (second part) was used to estimate the incremental costs of ADHD while controlling for patient characteristics and access-to-care variables.

RESULTS

The 2011 Medical Expenditure Panel Survey database included 9108 individuals aged 0 to 17 years, with 458 (5.0%) having an ADHD diagnosis. The ADHD cohort was 4.90 times more likely (95% confidence interval [CI] 2.97-8.08; P < 0.001) than the non-ADHD cohort to have an expenditure of at least $1, and among those with positive expenditures, the ADHD cohort had 58.4% higher expenditures than the non-ADHD cohort (P < 0.001). The estimated adjusted annual total incremental cost of ADHD was $949.24 (95% CI $593.30-$1305.18; P < 0.001). The adjusted annual incremental total direct expenditure for ADHD was higher among preschoolers ($989.34; 95% CI $402.70-$1575.98; P = 0.001) than among adolescents ($894.94; 95% CI $428.16-$1361.71; P < 0.001) or children ($682.71; 95% CI $347.94-$1017.48; P < 0.001).

CONCLUSIONS

Early diagnosis and use of evidence-based treatments may address the substantial burden of ADHD.

A prospective observational cohort study in primary care practices to identify factors associated with treatment failure in Staphylococcus aureus skin and soft tissue infections

Background

The incidence of outpatient visits for skin and soft tissue infections (SSTIs) has substantially increased over the last decade. The emergence of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) has made the management of S. aureus SSTIs complex and challenging. The objective of this study was to identify risk factors contributing to treatment failures associated with community-associated S. aureus skin and soft tissue infections SSTIs.

Methods

This was a prospective, observational study among 14 primary care clinics within the South Texas Ambulatory Research Network. The primary outcome was treatment failure within 90 days of the initial visit. Univariate associations between the explanatory variables and treatment failure were examined. A generalized linear mixed-effect model was developed to identify independent risk factors associated with treatment failure.

Results

Overall, 21% (22/106) patients with S. aureus SSTIs experienced treatment failure. The occurrence of treatment failure was similar among patients with methicillin-resistant S. aureus and those with methicillin-susceptible S. aureus SSTIs (19 vs. 24%; p = 0.70). Independent predictors of treatment failure among cases with S. aureus SSTIs was a duration of infection of ≥7 days prior to initial visit [aOR, 6.02 (95% CI 1.74–19.61)] and a lesion diameter size ≥5 cm [5.25 (1.58–17.20)].

Conclusions

Predictors for treatment failure included a duration of infection for ≥7 days prior to the initial visit and a wound diameter of ≥5 cm. A heightened awareness of these risk factors could help direct targeted interventions in high-risk populations.

Use of Statins and the Risk of Incident Diabetes: A Retrospective Cohort Study

INTRODUCTION

Even though several landmark statin trials have demonstrated the beneficial effects of statin therapy in both primary and secondary prevention of cardiovascular disease, several studies have suggested that statins are associated with a moderate increase in risk of new-onset diabetes. These observations prompted the US FDA to revise statin labels to include a warning of an increased risk of incident diabetes mellitus as a result of increases in glycosylated hemoglobin (HbA1c) and fasting plasma glucose. However, few studies have used US-based data to investigate this statin-associated increased risk of diabetes.

OBJECTIVE

The primary objective of our study was to examine whether the use of statins increases the risk of incident diabetes mellitus using data from the Thomson Reuters MarketScan (®) Commercial Claims and Encounters Database.

METHOD

This study was a retrospective cohort analysis utilizing data for the period 2003-2004. The study population included new statin users aged 20-63 years at index who did not have a history of diabetes.

RESULTS

The proportion (3.4 %) of statin users (N = 53,212) who had incident diabetes was higher than the proportion (1.2 %) of non-statin users (N = 53,212) who had incident diabetes. Compared with no statin use and controlling for demographic and clinical covariates, statin use was significantly associated with increased risk of incident diabetes (hazard ratio 2.01; 99 % confidence interval 1.74-2.33; p < 0.0001). In addition, risk of diabetes was highest among users of lovastatin, atorvastatin, simvastatin, and fluvastatin. Diabetes risk was lowest among pravastatin and rosuvastatin users.

DISCUSSION

Because the potential for diabetogenicity differs among different statin types, healthcare professionals should individualize statin therapy by identifying patients who would benefit more from less diabetogenic statin types.

Health care-associated pneumonia in the intensive care unit: Guideline-concordant antibiotics and outcomes

PURPOSE

Recent data have not demonstrated improved outcomes when guideline-concordant (GC) antibiotics are given to patients with health care-associated pneumonia (HCAP). This study was designed to evaluate the relationship between health outcomes and GC therapy in patients admitted to an intensive care unit (ICU) with HCAP.

MATERIALS AND METHODS

We performed a population-based cohort study of patients admitted to greater than 150 hospitals in the US Veterans Health Administration system to compare baseline characteristics, bacterial pathogens, and health outcomes in ICU patients with HCAP receiving GC-HCAP therapy, GC community-acquired pneumonia (GC-CAP) therapy, or non-GC therapy. The primary outcome was 30-day patient mortality. Risk factors for the primary outcome were assessed in a multivariable logistic regression model.

RESULTS

A total of 3593 patients met inclusion criteria and received GC-HCAP therapy (26%), GC-CAP therapy (23%), or non-GC therapy (51%). Patients receiving GC-HCAP had higher 30-day patient mortality compared to GC-CAP patients (34% vs 22%; P< .0001). After controlling for confounders, risk factors for 30-day patient mortality were vasopressor use (odds ratio, 1.67; 95% confidence interval, 1.30-2.13), recent hospital admission (1.53; 1.15-2.02), and receipt of GC-HCAP therapy (1.51; 1.20-1.90).

CONCLUSIONS

Our data do not demonstrate improved outcomes among ICU patients with HCAP who received GC-HCAP therapy.

Health Costs and Outcomes Associated with Medicare Part D Prescription Drug Cost-Sharing in Beneficiaries on Dialysis

BACKGROUND

High out-of-pocket costs for prescription medications have been associated with poor patient outcomes. A previous study found that the Part D coverage gap was significantly associated with decreases in adherence and persistence for medications frequently used in patients undergoing dialysis. It is not known what effect the decreased use of prescription drugs associated with the coverage gap had on utilization and spending for other medical care. 

OBJECTIVE

To determine the relationship between the Part D prescription drug cost-sharing structure and health and economic outcomes in Medicare beneficiaries on dialysis.

METHODS

A retrospective analysis using data from the United States Renal Data System (2006-2008) was conducted for Medicare-eligible patients receiving dialysis. Patients were grouped in 1 of 4 cohorts based on low-income subsidy (LIS) receipt and benefit phase in 2007: Cohort 1 (non-LIS and did not reach the coverage gap); Cohort 2 (non-LIS and reached the coverage gap); Cohort 3 (non-LIS and reached catastrophic coverage after the gap); and Cohort 4 (received an LIS, and none of the LIS patients reached the coverage gap). Outcomes included medical care utilization, direct medical costs, and mortality. 

RESULTS

A total of 11,732 subjects met the inclusion criteria. Patients in Cohorts 1, 2, and 3 had $3,222 lower, $2,457 lower, and $1,182 higher adjusted pharmacy costs (P  less than  0.001), but their adjusted hospitalization costs were $1,499 (P = 0.09), $2,287 (P = 0.01), and $2,959 (P = 0.01) higher, respectively, compared with Cohort 4 (LIS). In the propensity score-matched cohorts, patients who reached the coverage gap (Cohort 2) had higher rates of hospitalization (relative risk [RR] = 1.02, 95% CI = 0.94-1.10), outpatient visits (RR = 1.16, 95% CI = 1.08-1.25), and other visits (RR = 1.17, 95% CI = 1.03-1.32) compared with those who had an LIS (Cohort 4). Patients in Cohort 3 had a higher rate of outpatient visits compared with those in Cohort 4 (RR = 1.14, 95% CI = 1.03-1.25). There were no differences in medical care utilization between patients in Cohort 1 and Cohort 4. Compared with patients in Cohort 4 (LIS), patients in Cohort 2 (those who reached the coverage gap) had 9% higher hospitalization costs (RR = 1.09, 95% CI = 1.01-1.18) and 6% higher outpatient costs (RR = 1.06, 95% CI = 0.97-1.17), respectively. During the 1-year follow-up period, patients in Cohort 2 had a 20% (HR = 1.20, 95% CI = 1.05-1.37) and a 22% (HR = 1.22, 95% CI = 1.01-1.47) increased risk of all-cause and cardiovascular-related mortality compared with those in Cohort 4, respectively. 

CONCLUSIONS

Our findings suggest that reaching the Part D coverage gap was associated with unfavorable clinical and economic outcomes in patients undergoing dialysis.

Attitudes Toward Medications and the Relationship to Outcomes in Patients with Schizophrenia

The determinants of attitudes toward medication (ATM) are not well elucidated. In particular, literature remains equivocal regarding the influence of cognition, adverse events, and psychiatric symptomatology. This study evaluated relationships between those outcomes in schizophrenia and ATM. This is a retrospective analysis of data collected during the Texas Medication Algorithm Project (TMAP, n=307 with schizophrenia-related diagnoses), in outpatient clinics at baseline and every 3 months for ≥1 year (for cognition: 3rd and 9th month only). The Drug Attitude Inventory (DAI-30) measured ATM, and independent variables were: cognition (Trail Making Test [TMT], Verbal Fluency Test, Hopkins Verbal Learning Test), adverse events (Systematic Assessment for Treatment-Emergent Adverse Events, Barnes Akathisia Rating Scale), psychiatric symptomatology (Brief Psychiatric Rating Scale, Scale for Assessment of Negative Symptoms [SANS]), and medication adherence (Medication Compliance Scale). Analyses included binary logistic regression (cognition, psychiatric symptoms) and chi-square (adverse events, adherence) for baseline comparisons, and linear regression (cognition) or ANOVA (adverse events, adherence) for changes over time. Mean DAI-30 scores did not change over 12 months. Odds of positive ATM increased with higher TMT Part B scores (p=0.03) and lower SANS scores (p=0.02). Worsening of general psychopathology (p<0.001), positive symptoms (p<0.001), and negative symptoms (p=0.007) correlated with negative changes in DAI-30 scores. Relationships between cognition, negative symptoms, and ATM warrant further investigation. Studies evaluating therapies for cognitive deficits and negative symptoms should consider including ATM measures as endpoints. Patterns and inconsistencies in findings across studies raise questions about whether some factors thought to influence ATM have nonlinear relationships.

Adherence and persistence to prescribed medication therapy among Medicare part D beneficiaries on dialysis: comparisons of benefit type and benefit phase

BACKGROUND

The implementation of Medicare Part D provided insurance coverage for outpatient medications, but when persons reach the "gap," they have very limited or no medication insurance coverage until they reach a second threshold for catastrophic coverage. In addition, some patients have a low-income subsidy (LIS), and their out-of-pocket costs do not reach the threshold for the gap. Little is known about how these Part D types (LIS versus non-LIS) and benefit phases (before the gap, during the gap, after the gap) affect medication adherence and persistence of dialysis patients. 

OBJECTIVE

To examine medication use, adherence, and persistence for Medicare-eligible dialysis patients by Part D benefit type and benefit phase. 

METHODS

A retrospective cohort study using data from the U.S. Renal Data System (USRDS) was conducted for Medicare-eligible dialysis patients. Outcomes included medication use, adherence, and persistence. Patients were categorized into 4 cohorts based on their Part D benefit phase that the beneficiaries reached at the end of the year and LIS receipt in 2007: Cohort 1 = non-LIS and did not reach the coverage gap; Cohort 2 = non-LIS and reached the coverage gap; Cohort 3 = non-LIS and reached catastrophic coverage after the gap; and Cohort 4 = received an LIS and none of the LIS patients reached the coverage gap. Outcomes were measured separately for 5 therapeutic classes of outpatient prescription drugs: antihyperglycemics, antihypertensives, antilipidemics, phosphate binders, and calcimimetics. 

RESULTS

A total of 11,732 patients met the study inclusion criteria. Patients were distributed among the cohorts as follows: 3,678 (31.3%) patients in Cohort 1 who did not reach the coverage gap; 4,349 (37.1%) patients in Cohort 2 who reached the coverage gap but not catastrophic coverage; 1,310 (11.2%) patients in Cohort 3 who reached catastrophic coverage; and 2,395 (20.4%) patients in Cohort 4 who had an LIS (none of whom reached the gap). Overall, the percentage of patients who were adherent to their medications (≥ 80% medication possession ratio) was low: 39% for antihyperglycemics, 59% for antihypertensives, 54% for antilipidemics, 22% for phosphate binders, and 35% for cinacalcet. There were wide ranges in adherence rates depending on the cohort. For patients on antihyperglycemics, antihypertensives, antilipidemics, phosphate binders, and cinacalcet, the odds ratios for adherence to therapy were 0.76 (95% C I =0.63-0.92), 1.06 (0.94-1.19), 0.80 (0.67-0.95), 0.65 (0.55-0.76), and 0.39 (0.30-0.49), respectively; the hazard ratios for discontinuation of therapy were 1.18 (95% CI 1.06-1.31), 1.01 (0.93-1.10), 1.25 (1.12-1.40), 1.13 (1.05-1.21), and 1.61 (1.75-1.82), respectively, for Cohort 2 patients who reached the coverage gap compared with those in Cohort 4 who received an LIS. In addition, when comparing adherence before and after the benefit gap, patients in Cohort 2 were significantly more likely to be nonadherent to medications for diabetes (relative risk (RR) = 1.71, 95% CI = 1.48-1.99), hypertension (RR = 1.69, 95% CI = 1.54-1.85), hyperlipidemia (RR = 2.01, 95% CI = 1.76-2.29), hyperphosphatemia (RR = 1.74, 95% CI = 1.55-1.95), and hyperparathyroidism (RR = 2.08, 95% CI = 1.66-2.60) after reaching the coverage gap. 

CONCLUSIONS

More than half of Medicare beneficiaries on dialysis reached the Part D coverage gap in 2007. Our findings suggest that the Part D coverage gap was significantly associated with decreases in adherence and persistence for medications frequently used in patients undergoing dialysis. Patients who reached the coverage gap (Cohort 2) often decreased use of or discontinued critical medications after reaching the coverage gap. Compared with patients who had an LIS (Cohort 4), patients in Cohort 2 had significantly lower medication adherence and persistence levels. The negative impact of the Part D coverage gap (high out-of-pocket cost sharing) on medication adherence and persistence for Medicare-eligible dialysis patients has implications for currently proposed Medicare end-stage renal disease bundled reimbursement payment and requires more research.

Medication effectiveness with the use of tumor necrosis factor inhibitors among Texas Medicaid patients diagnosed with rheumatoid arthritis

BACKGROUND

Adalimumab (Humira [ADA]), etanercept (Enbrel [ETN]), and infliximab (Remicade [IFX]) are tumor necrosis factor (TNF) inhibitors indicated for the treatment of a variety of disorders. While their effectiveness has not been directly compared in a clinical trial, results from the majority of the indirect treatment comparisons suggest comparable efficacy and safety profiles. However, these TNF inhibitor agents differ in administration method and dosing flexibility, which may result in differences in medication use profiles (e.g., adherence, persistence, discontinuation, dose escalation, and switching to a new biologic rheumatoid arthritis drug) and effectiveness in clinical practice. 

OBJECTIVE

To estimate the effectiveness of ADA, ETN, and IFX in patients with rheumatoid arthritis (RA) using a validated, claims-based algorithm designed for large retrospective databases.

METHODS

Adult (aged 18-63 years) patients diagnosed with RA, and receiving ADA, ETN, or IFX, and insured by Texas Medicaid were included. The index date was the date of the first prescription claim for ADA or ETN or infusion record for IFX with no claim or infusion record of a biologic drug in the preceding 6 months (i.e., biologic naïve). The study time frame was from July 2003 to August 2011, and prescription and medical claims for each subject were analyzed over an 18-month period (6 months pre- and 12 months post-index). Based on a RA medication effectiveness algorithm (Curtis et al. 2011), a RA medication was classified as effective if each of the following 6 criteria were met: (1) high medication adherence (i.e., medication possession ratio [MPR] ≥ 80%, defined as the sum of days' supply for all fills or infusions divided by the number of days in the study period); (2) no switching to (or addition of) new biologic RA drugs; (3) no addition of new nonbiologic RA drugs; (4) no increase in dose or frequency of administration of the RA medication currently evaluated; (5) no more than 1 glucocorticoid (GC) joint injection; and (6) no increase in dose of a concurrent oral GC. Propensity score (PS) matching was employed, and paired tests (i.e., McNemar's) and multivariate conditional logistic regression analysis were used to compare groups. Demographic (i.e., age, gender, race) and clinical (i.e., use of nonbiologic disease-modifying antirheumatic drugs [DMARDs], pain medication use, GC medication use, RA-related and non-RA-related health care visits [i.e., ambulatory and inpatient visits], number of nonstudy RA medications, and comorbidity index) characteristics, including total health care utilization cost at baseline, served as study covariates.

RESULTS

After PS matching, 822 patients (n = 274 per group) were included. The majority of the sample (69.2%) was between 45-63 years, female (88%), and Hispanic (53.7%). Results for each TNF inhibitor differed significantly for 2 of the 6 effectiveness criteria (i.e., medication adherence and dose escalation). A significantly higher proportion of patients on IFX were adherent compared with patients on ETN or ADA (38.3% vs. 16.4% and 21.2%, P  less than  0.0001 for both). Adherence rates between ETN and ADA were not significantly different. A significantly higher (P  less than  0.0001) proportion of patients on ETN had no dose escalation compared with patients on ADA or IFX (98.2% vs. 88.7% and 80.3%, P  less than  0.0001). Dose escalation rate was also significantly lower (P = 0.0106) for ADA compared with IFX. The multivariate conditional logistic regression analysis indicated no significant difference in overall effectiveness using the claims-based algorithm among the 3 TNF inhibitors nor any significant relationship between effectiveness and the study covariates. 

CONCLUSION

The study results suggest that when using a medication effectiveness algorithm, IFX, ETN, and ADA have comparable effectiveness in patients with RA. Patient adherence to therapy may be higher if given IFX, and patients who receive ETN are less likely to have a dose escalation.

Outpatient antibiotic prescribing in the United States: 2000 to 2010

BACKGROUND

The use of antibiotics is the single most important driver in antibiotic resistance. Nevertheless, antibiotic overuse remains common. Decline in antibiotic prescribing in the United States coincided with the launch of national educational campaigns in the 1990s and other interventions, including the introduction of routine infant immunizations with the pneumococcal conjugate vaccine (PCV-7); however, it is unknown if these trends have been sustained through recent measurements.

METHODS

We performed an analysis of nationally representative data from the Medical Expenditure Panel Surveys from 2000 to 2010. Trends in population-based prescribing were examined for overall antibiotics, broad-spectrum antibiotics, antibiotics for acute respiratory tract infections (ARTIs) and antibiotics prescribed during ARTI visits. Rates were reported for three age groups: children and adolescents (<18 years), adults (18 to 64 years), and older adults (≥65 years).

RESULTS

An estimated 1.4 billion antibiotics were dispensed over the study period. Overall antibiotic prescribing decreased 18% (risk ratio (RR) 0.82, 95% confidence interval (95% CI) 0.72 to 0.94) among children and adolescents, remained unchanged for adults, and increased 30% (1.30, 1.14 to 1.49) among older adults. Rates of broad-spectrum antibiotic prescriptions doubled from 2000 to 2010 (2.11, 1.81 to 2.47). Proportions of broad-spectrum antibiotic prescribing increased across all age groups: 79% (1.79, 1.52 to 2.11) for children and adolescents, 143% (2.43, 2.07 to 2.86) for adults and 68% (1.68, 1.45 to 1.94) for older adults. ARTI antibiotic prescribing decreased 57% (0.43, 0.35 to 0.52) among children and adolescents and 38% (0.62, 0.48 to 0.80) among adults; however, it remained unchanged among older adults. While the number of ARTI visits declined by 19%, patients with ARTI visits were more likely to receive an antibiotic (73% versus 64%; P <0.001) in 2010 than in 2000.

CONCLUSIONS

Antibiotic use has decreased among children and adolescents, but has increased for older adults. Broad-spectrum antibiotic prescribing continues to be on the rise. Public policy initiatives to promote the judicious use of antibiotics should continue and programs targeting older adults should be developed.

Adherence to oral diabetes medications among users and nonusers of antipsychotic medication

OBJECTIVE

This study compared adherence to oral diabetes medications among users and nonusers of oral antipsychotic medications. Adherence to oral antidiabetics and antipsychotics among antipsychotic users was also compared.

METHODS

Texas Medicaid prescription claims data from July 1, 2008, to December 31, 2011, were used to examine adherence to oral antidiabetics among users and nonusers of antipsychotics for 12 months after the first prescription for oral diabetes medication. Users and nonusers of antipsychotics were matched on the basis of their chronic disease score (CDS). Medication adherence was measured by proportion of days covered (PDC), and patients with a PDC value ≥.80 were considered to be adherent. Bivariate and multivariate analyses were used to compare adherence between cohorts.

RESULTS

A total of 1,821 patients from each group were matched. The mean PDC for oral antidiabetics was significantly higher among antipsychotic users (.63) than nonusers (.55) (p<.001). About 37% (N=678) of antipsychotic users and 24% (N=473) of nonusers were adherent to oral antidiabetics. After adjustment for age, gender, CDS, and number of prescriptions, antipsychotic users were 2.10 times more likely than nonusers to be adherent to oral antidiabetics (p<.001). Antipsychotic users had higher mean PDC values for antipsychotic medications than for oral antidiabetics (.78±.25 versus .63±.29, p<.001).

CONCLUSIONS

Adherence to oral antidiabetics in the Texas Medicaid population was better among antipsychotic medication users than nonusers, but overall adherence was poor for both groups. Low adherence rates highlight the need for interventions to help improve medication management.

Clinical Epidemiology of Carbapenem-Resistant Enterobacteriaceae in Community Hospitals

Background: The occurrence of carbapenem-resistant Enterobacteriaceae (CRE) has been increasing at an alarming rate worldwide. Despite that increase, there are limited data identifying risk factors. Objective: To evaluate risk factors associated with the acquisition of CRE among hospitalized patients. Methods: We performed a retrospective case-case-control study in 4 community hospitals from June 2007 through June 2012. Case group 1 (CG1) consisted of patients with CRE. Case group 2 (CG2) consisted of patients with carbapenem susceptible Enterobacteriaceae (CSE). CG2 patients were matched to CG1 patients by site of infection and species of Enterobacteriaceae. Hospitalized controls were matched 2:1 by date of admission and hospital location to patients in CG1. Two sets of analyses were conducted comparing demographics, comorbidities, and antibiotic exposures of CG1 and CG2 to controls and then contrasted to identify unique risk factors associated with CRE. Results: Overall, 104 patients (CG1, 25 patients; CG2, 29 patients, control, 50 patients) were evaluated. CRE and CSE consisted mostly of Klebsiella spp. (63%) from a urinary source (28%). In multivariable analyses, intensive care unit (ICU) stay (OR 12.48; 95% CI 1.14-136.62; p = 0.04) and cumulative number of antibiotic days (OR 1.47; 95% CI 1.02-2.16; p = 0.04) were distinct independent predictors of CRE isolation; whereas, cumulative health care exposures (OR 2.03; 95% CI 1.20-3.41; p < 0.01) and vancomycin exposure (OR 6.70; 95% CI 1.15- 38.91; p = 0.03) were predictors for CSE. Conclusions: CRE should be considered in patients requiring ICU admission, particularly those who have received multiple antibiotics. Antibiotic stewardship efforts should be directed at reducing all antibiotic exposures as opposed to any specific antibiotic class to reduce the risk of CRE.

Estimates of charges associated with emergency department and hospital inpatient care for opioid abuse-related events

The economic burden of prescription opioid abuse is substantial; however, no study has estimated the monetary burden of hospital services (emergency department [ED] and inpatient) using a single, nationally representative database. We sought to estimate total and average (adjusted for demographic and clinical factors) charges billed for opioid abuse-related events, and magnitude of difference in charges between ED visits resulting in inpatient admission to the same hospital and treat-and-release ED visits in the United States. We used the 2006, 2007, and 2008 files of the Healthcare Cost and Utilization Project's Nationwide Emergency Departments Sample (HCUP-NEDS) to identify events and charges assigned opioid abuse, dependence, or poisoning ICD-9-CM (International Classification of Diseases, 9th Revision, Clinical Modification) diagnosis codes (304.0X, 304.7X, 305.5X, 965.00, 965.02, 965.09). Using methods to account for the complex sampling design of the NEDS and a log-linked gamma regression model, we estimated national total and mean charges (in 2010 USD). Total charges were $9.8, $9.6, and $9.5 billion for 2006, 2007, and 2008, respectively. Medicaid-covered events had the highest total charges ($3 billion), followed by events covered by Medicare ($2 billion) for each year. The national estimate of adjusted, mean, per-event charges, was $18,891 (95% confidence interval [CI] = $18,167-$19,616). Compared with events covered by private insurance, mean charges for Medicare- and Medicaid-covered events were higher (t = 28.14, P < .001; t = 6.42, P < .001, respectively), whereas self-paid events had significantly lower charges (t = -11.14, P < .001). ED visits resulting in subsequent inpatient admission had approximately 6 times higher charges than treat-and-release visits. This study provides estimates of differences in hospital costs of opioid abuse by insurance status, resulting in a better understanding of the economic burden of opioid abuse on the health care system.

Identifying patient characteristics associated with high schizophrenia-related direct medical costs in community-dwelling patients

BACKGROUND

Schizophrenia is a chronic, debilitating disease that affects approximately 1% of the U.S. population and has disproportionately high costs. Several factors, including age, gender, insurance status, and comorbid conditions, have been hypothesized to be associated with schizophrenia-
related costs. 

OBJECTIVE

To identify demographic and clinical characteristics of community-dwelling schizophrenia patients experiencing high schizophrenia-related direct medical costs. 

METHODS

Community-dwelling patients with a diagnosis for schizophrenic disorder (ICD-9-CM code 295) and other nonorganic psychoses (ICD-9-CM code 298) were identified from the 2005-2008 Medical Expenditure Panel Survey (MEPS). Schizophrenia-related direct medical costs were calculated for (a) inpatient hospitalizations; (b) prescription medications; and (c) outpatient, office-based physician, emergency room, and home health care visits. Using Andersen's Behavorial Model of Health Services Use and the literature, factors that could potentially affect schizophrenia-related direct medical costs were identified. Based on the distribution of their mean annual costs, patients were classified into high- and low-cost groups. Logistic regression was used to determine the likelihood of high-cost group membership based on age, sex, race, insurance status, marital status, region of residence, family income as a percentage of poverty line, number of medical comorbidities, number of mental health-related comorbidities, patient-perceived general health status, patient-perceived mental health status, and year of inclusion in MEPS. In addition, a generalized linear model (GLM) regression (gamma distribution with a log-link function) was used to evaluate the relationships between the independent variables and total schizophrenia-related direct medical costs as a continuous variable. 

RESULTS

From the MEPS database, we identified 317 patients with schizophrenia who represented 2.75 million noninstitutionalized, community-dwelling schizophrenia patients in the United States between 2005 and 2008. The logistic regression procedure showed that older patients (OR=0.933, 95% CI=0.902-0.966) and patients with a spouse (OR=0.150, 95% CI=0.041-0.555) were less likely to be in the high-cost group, while those who reported having "poor" perceived general health status (OR=15.548, 95% CI=1.278-189.127) were more likely to be in the high-cost group. The GLM regression procedure showed that younger patients (compared with older patients), African Americans (compared with Caucasions), patients with private insurance (compared with the uninsured), and those living in the northeastern United States (compared with those living in the southern United States) had higher schizophrenia-related direct medical costs. 

CONCLUSION

Identification of factors associated with a high-cost population may help decision makers in managed care, government, and other organizations allocate resources more efficiently and health care providers manage patients more effectively through assignment of these patients to case managers and appropriate monitoring and treatment. 

Factors associated with hospices' provision of complementary and alternative medicine

There is limited research about the provision of complementary and alternative (CAM) in US hospices. The purpose of this study was to assess the factors that influence hospices' likelihood of providing CAM therapies. Mail surveys were sent to 369 hospices in Texas; 61 were returned undelivered, yielding a total usable response rate of 35.7% (n = 110) after an initial and one follow-up mail out. Binary logistic regression was used to assess whether the likelihood of offering CAM is related to hospice's age, geographic location, agency type, profit orientation, Medicare certification, and number of patients served annually. Results showed that profit orientation and the number of patients served by hospices were significantly related to the probability that hospices will offer CAM. Specifically, the odds of offering CAM in not-for-profit hospices were approximately 4 times higher than that in for-profit hospices (odds ratio [OR] = 3.77, P = .022, 95% confidence interval [CI] = 1.2, 11.8). In addition, for every 100 patients served by the hospices, the odds of offering CAM increases by 13% (OR = 1.13, P = .015, 95% CI = 1.02, 1.25). In conclusion, CAM offering by hospices is related to hospices' profit orientation status and number of patients served but is not related to other measured characteristics of hospices.

Complementary and alternative medicine utilization in Texas hospices: prevalence, importance, and challenges

The purpose of this study was to describe the prevalence, importance, and challenges of complementary and alternative medicine (CAM) utilization in Texas hospices. Mail surveys were sent to 369 hospices in Texas, and 110 useful surveys were returned. Results showed that a majority (n = 62, 56.4%) of hospices offer CAM to their clients, with the most popularly offered CAMs being massage, music, and relaxation therapies. Despite the availability of CAM services in most hospices, and that the utilization of CAM has the potential to improve overall quality of life of patients, our results showed that a sizeable proportion of patients in these hospices are not utilizing the provided CAMs. Funding and personnel constraints were substantial obstacles to offering CAM.

Pharmacist reporting of serious adverse drug events to the Food and Drug Administration

OBJECTIVE

To identify barriers to and facilitators of pharmacist reporting of serious adverse drug events (ADEs) to the Food and Drug Administration (FDA).

METHOD

Two focus groups consisting of practicing pharmacists were held in Austin, TX, in 2009. The following open-ended questions were used in the focus groups: (1) What do you think would make it easier to report serious ADEs to the FDA? (2) What do you think would make it more difficult to report serious ADEs to the FDA? A content analysis was performed on the generated transcripts.

RESULTS

13 pharmacists practicing in hospital and community settings in Texas participated. Pharmacists identified 27 barriers to and facilitators of reporting serious ADEs to FDA. Lack of patients' complete medical histories and lack of time were the barriers most frequently cited. Knowledge and awareness of ADEs and ADE reporting emerged as important factors that would facilitate reporting serious ADEs to FDA.

CONCLUSION

These findings highlight the factors that facilitate and/or inhibit pharmacist reporting of serious ADEs to FDA. Improved knowledge of ADEs and ADE reporting would facilitate reporting behaviors, while lack of time, lack of complete patient medical histories, and lack of compensation issues serve as important barriers to reporting. Interventions are needed to address these factors.

Hospitalizations for cardiovascular disease in African Americans and whites with HIV/AIDS

Therapeutic advances have resulted in an epidemiological shift in the predominant causes of hospitalization for patients with HIV/AIDS. An emerging cause for hospitalization in this patient population is cardiovascular disease (CVD); however, data are limited regarding how this shift affects different racial groups. The objective of this observational, retrospective study was to evaluate the association between race and hospitalization for CVD in African Americans and whites with HIV/AIDS and to compare the types of CVD-related hospitalizations between African Americans and whites with HIV/AIDS. Approximately 1.5 million hospital discharges from the US National Hospital Discharge Surveys for the years of 1996 to 2008 were identified. After controlling for potential confounders, the odds of CVD-related hospitalization in patients with HIV/AIDS were 45% higher for African Americans than whites (odds ratio [OR]=1.45, 95% CI, 1.39-1.51). Other covariates that were associated with increased odds of hospitalization for CVD included chronic kidney disease (OR=1.43, 95% CI, 1.36-1.51), age≥50 years (OR=3.22, 95% CI, 2.94-3.54), region in the Southern United States (OR=1.17, 95% CI, 1.11-1.23), and Medicare insurance coverage (OR=1.71, 95% CI, 1.60-1.83). Male sex was not significantly associated with the study outcome (OR=0.99, 95% CI, 0.96-1.02). Compared to whites with HIV/AIDS, African Americans with HIV/AIDS had more hospitalizations for heart failure and hypertension, but fewer hospitalizations for stroke and coronary heart disease. In conclusion, African Americans with HIV/AIDS have increased odds of CVD-related hospitalization as compared to whites with HIV/AIDS. Furthermore, the most common types of CVD-related hospitalizations differ significantly in African Americans and whites.

Effect of social influences on pharmacists' intention to report adverse drug events

OBJECTIVES

To identify the groups or individuals that influence pharmacists' decision making to report adverse drug events (ADEs), determine the differences in social influence or subjective norm between intenders and nonintenders, and determine the relationship between subjective norm toward reporting serious ADEs and practice and demographic characteristics.

DESIGN

Nonexperimental cross-sectional study.

SETTING

Texas during June and July 2009.

PARTICIPANTS

1,500 Texas pharmacists.

INTERVENTION

As part of a larger survey, 3 and 18 items were used to assess pharmacists' intentions and subjective norm, respectively, to report serious ADEs to the Food and Drug Administration (FDA).

MAIN OUTCOME MEASURE

Pharmacists' subjective norm toward reporting serious ADEs.

RESULTS

The survey had a response rate of 26.4% (n = 377). Most pharmacists intended to report serious ADEs that they would encounter (15.87 ± 4.22 [mean ± SD], possible range 3-21, neutral = 12). The mean subjective norm scores were moderately high and positive (28.75 ± 9.38, 1-49, 16), indicating that the referents had a moderate influence on pharmacists regarding reporting serious ADEs to FDA. FDA had the greatest (34.82 ± 12.16) and drug manufacturers the lowest (21.55 ± 13.83) social influence. The most important salient referents (important others) in pharmacists' decisions to report serious ADEs were FDA, patients, pharmacy associations, pharmacy managers/bosses, and hospitals and hospital groups. Gender (female equals higher), pharmacists' years of experience (negative correlation), and knowledge of ADE reporting (positive correlation) were associated with subjective norm.

CONCLUSION

Pharmacists had a moderately high subjective norm, suggesting that ADE reporting intentions is influenced by others and that the opinions of others are of great importance in pharmacists' intentions regarding ADE reporting. The main drivers of subjective norm were FDA, patients, pharmacy associations, and managers/bosses.