Number of Influenza Risk Factors Informs an Adult's Increased Potential of Severe Influenza Outcomes: A Multiseason Cohort Study From 2015 to 2020.

Background: While studies have evaluated factors influencing the risk of severe influenza outcomes, there is limited evidence on the additive impact of having multiple influenza risk factors and how this varies by age. Methods: Patients ≥18 years of age in the United States were evaluated retrospectively in 5 seasonal cohorts during the 2015-2020 influenza seasons. Patient-level electronic medical records linked to pharmacy and medical claims were used to ascertain covariates and outcomes. Multivariable logistic regression models were fitted for the overall population and by age subgroups to evaluate the association of demographic and clinical characteristics with odds of influenza-related medical encounters (ICD-10 codes J09*-J11*). The logistic regression models included sex, race/ethnicity, geographic region, baseline health care resource use, vaccination status, specific high-risk comorbidities, number of influenza risk factors, body mass index, and smoking status. Odds ratios from each of the 5 seasons were summarized via fixed effect meta-analysis. Results: Season cohort sizes ranged from 887 260 to 3 628 168 adults. Of all patient characteristics evaluated, an individual's cumulative number of high-risk influenza conditions, as defined per the Centers for Disease Control and Prevention, was the most predictive of an increased probability of having an influenza-related medical encounter overall and across age groups. For adults of any age, odds ratios for influenza hospitalization ranged from 1.8 (95% CI, 1.7-2.0) for 1 risk factor to 6.4 (95% CI, 5.8-7.0) for ≥4 risk factors. Conclusions: These results show that a simple measure such as the number of influenza risk factors can be highly informative of an adult's potential for severe influenza outcomes.

Healthcare costs among patients with newly diagnosed helicobacter pylori infection in the United States: a linked claims-EHR study.

AIMS: The study objectives were to 1) characterize the cost drivers of patients with Helicobacter pylori (HP) and 2) estimate HP-related cost savings following lab-confirmed HP eradication with US guideline-recommended treatment compared to failed eradication. METHODS: We identified adults newly diagnosed with HP between 1/1/2016-12/31/2019 in the Veradigm Electronic Health Record Database linked to claims data (earliest HP diagnosis = index date). For the overall costs analysis, we required patients to have data available for ≥12 months before and after the index date. Then, we used multivariable modeling to assess the marginal effects of comorbidities on all cause-healthcare costs in the 12 months following HP diagnosis. For the eradication savings analysis, we identified patients with ≥1 HP eradication regimen, a subsequent HP lab test result, and ≥1 year of data after the test result. Then we used multivariable modeling to estimate HP-related cost while adjusting for eradication status, demographics, post-testing HP-related clinical variables, and the interactions between eradication status and each HP-related clinical variable. RESULTS: The overall cost analysis included 60,593 patients with HP (mean age 54.2 years, 65.5% female). Mean (SD) 12-month unadjusted all-cause costs were $23,693 ($78,089). Rare comorbidities demonstrated the highest marginal effect. The marginal effects of gastric cancer and PUD were $15,705 and $7,323, respectively. In the eradication savings analysis, 1,835 (80.0%) of the 2295 patients had lab test-confirmed HP eradication. Compared to failed eradication, there were significant one-year cost savings among patients with successful HP eradication and select conditions: $1,770 for PUD, $518 for atrophic gastritis, $494 for functional dyspepsia, and $352 for gastritis. CONCLUSIONS: The healthcare costs of patients with HP are partially confounded by their burden of high-cost comorbidities. In the subset of patients with available results, confirmed vs. failed eradication of HP was associated with short-term cost offsets among those with specific to HP-related sequelae.

Helicobacter pylori (HP) is a common infection. We aimed to better understand healthcare costs for people infected with HP. Specifically, we were interested in 1) investigating whether complications from HP were causing high costs. 2) whether successful eradication of HP would lead to lower healthcare costs. We captured data on adults diagnosed with HP between 2016 and 2019. The data used in this study came from medical records and insurance bills. In the first part of the study, we found that patients with HP often have other health issues, and these other health issues were driving high healthcare costs. The majority of cost savings associated with HP eradication accrue from the prevention of potential complications of long-term infection, such as peptic ulcer disease and, rarely, gastric cancer.

Diagnosis and treatment patterns among patients with newly diagnosed Helicobacter pylori infection in the United States 2016-2019.

Approximately 36% of the United States (US) population is infected with Helicobacter pylori (HP), a known major risk factor for peptic ulcer disease and gastric cancer. HP eradication reduces the rate of complications; however, the benefits are undermined by rising rates of HP eradication treatment failure. This real-world observational cohort analysis aims to describe HP diagnostic and treatment patterns among insured patients in the US. Using diagnoses, lab results, and treatment patterns, we identified adults (18+) with new diagnoses of HP in the Veradigm Health Insights EHR Database linked to Komodo claims data (1/1/2016-12/31/2019). Patients were required to have ≥ 12 months of data pre-/post-index. We captured patient characteristics, HP-related diagnostic testing, and the use of US guideline-recommended HP eradication regimens. HP eradication rates following first-line eradication treatment were measured among patients with available lab results. Overall, 31.8% of the 60,593 included patients did not receive guideline-recommended treatment. Among the 68.2% (41,340) with first-line treatment, 80.2% received clarithromycin-based triple therapy, and 6.6% received bismuth quadruple therapy. Of the 4569 patients with a repeated course of eradication therapy, 53.4% received the same regimen as their first-line, the majority (90.7%) of whom received two rounds of clarithromycin-based triple therapy. Among the 2455 patients with results of HP non-serology testing following first-line treatment, the 180-day eradication rate was 80.2% overall, with differences based on treatments and demographics. This study highlights gaps between guideline-recommended HP management and real-world patterns, underscoring the need to improve HP testing, treatment, and follow-up practices.

Healthcare Resource Utilization and Costs in Celiac Disease: A US Claims Analysis.

INTRODUCTION: Celiac disease (CeD) is a lifelong immune-mediated enteropathy in which dietary gluten triggers an inflammatory reaction in the small intestine. This retrospective cohort study examines healthcare resource utilization (HRU) and costs between patients with CeD and matched controls. METHODS: Patients with CeD (cases) with an endoscopic biopsy and ≥2 medical encounters with a CeD diagnosis between January 1, 2010, and October 1, 2015, were identified in the MarketScan databases. The date of the first claim with a CeD diagnosis on or after the endoscopic biopsy was the index date. Cases were matched 1:1 to patients without CeD (controls) on demographic characteristics and Deyo-Charlson Comorbidity Index score. Clinical characteristics, all-cause, and CeD-related HRU and costs (adjusted to 2017 US dollars) were compared between cases and controls during the 12 months before (baseline) and 24 months after (follow-up) the index date. RESULTS: A total of 11,008 cases (mean age 40.6 years, 71.3% women) were matched to 11,008 controls. During the follow-up, a higher proportion of cases had all-cause and CeD-related HRU including inpatient admissions, emergency department visits, gastroenterologist visits, dietician visits, endoscopic biopsies, and gastroenterology imaging (all P ≤ 0.002). Incremental all-cause and CeD-related costs were in the first ($7,921 and $2,894) and second ($3,777 and $935) year of follow-up, driven by outpatient services costs. DISCUSSION: In this US national claims database analysis, there was evidence of an increase in both all-cause and CeD-related HRU and related costs in patients with CeD compared with matched patients without CeD, suggesting a significant economic burden associated with CeD.

Impact of cytomegalovirus complications on resource utilization and costs following hematopoietic stem cell transplant.

Objective: The impact of cytomegalovirus (CMV) infection on healthcare resource utilization (HCRU) and costs post-allogeneic hematopoietic stem cell transplant (allo-HSCT) has not been well studied in the US. This retrospective, observational cohort study examined such outcomes in the first year following allo-HSCT.Methods: The IBM MarketScan administrative claims database was used to identify adults who underwent a first allo-HSCT between 1 January 2010 and 30 April 2015. Patients were required to have continuous medical and pharmacy enrollment for ≥12 months before and after the allo-HSCT. HCRU and medical costs (2016 US$) were compared by the presence or absence of CMV infection over 1-year follow-up.Results: A total of 1825 adults met the inclusion criteria (57.5% male; mean age 50.8 years). During the follow-up period, 410 (22.5%) patients had a CMV-related claim. Patients with CMV infection were significantly more likely to have a 60-day-(31.2 vs. 19.4%), 100-day-(50.0 vs. 30.5%) or 365-day readmission (78.0 vs. 57.8%) compared to those without a CMV-related event (all p < .001). During follow-up, patients with CMV infection had significantly greater mean total costs, reflecting higher inpatient costs ($677,240 vs. $462,562), outpatient costs ($141,366 vs. $94,312) and prescription drug costs ($27,391 vs. $22,082) (all p < .001). Valganciclovir (59.8%) and ganciclovir (33.7%) were the most commonly utilized anti-viral agents in patients with CMV.Conclusions: CMV infection was associated with significantly higher healthcare resource utilization and costs during the first year post-allo-HSCT. Additional research is warranted to further evaluate the consequences of post-HSCT CMV infection, as well as cost-effective measures to minimize its occurrence.

Treatment Patterns and Economic Burden by Lines of Therapy Among Patients with Advanced Hepatocellular Carcinoma Treated with Systemic Cancer Therapy.

PURPOSE: This study examined clinical and economic outcomes among patients with advanced hepatocellular carcinoma (HCC) treated with systemic agents by line of therapy. METHODS: Adults with ≥ 2 medical claims for primary diagnosed HCC (from January 1, 2008, through September 30, 2015) and ≥ 1 claim for systemic HCC-related therapy were identified in the IBM MarketScan® Research Databases. Continuous enrollment was required 6 months before and 1 month after diagnosis. Patients were categorized into first- (1L) and second-line (2L) treatment cohorts; those receiving sorafenib as 1L were evaluated. Treatment patterns, healthcare resource utilization, costs, and survival during 1L and 2L therapy were measured. Survival was assessed for patients linked to the Social Security Administration Master Death File. RESULTS: 1459 patients, 758 with death data, met the 1L cohort criteria; 163 patients, 87 with death data, later received 2L therapy. 77.1% had 1L sorafenib, alone or in combination. Median 1L treatment duration was 3.0 months; median survival time from start of 1L to death or censor was 6.8 months. There was no predominant 2L agent. Median 2L treatment duration was 3.0 months; median survival time from start of 2L was 9.3 months. Median total healthcare costs per patient per month were $13,297 for 1L (all), $13,471 for 1L (sorafenib), and $11,786 for 2L. CONCLUSIONS: Findings confirm high 1-year mortality for advanced HCC, suggesting a high cost burden. While no 2L therapy was available during this analysis, recently approved 2L agents have the potential to improve survival after sorafenib failure or intolerance.

Direct and Indirect Healthcare Resource Utilization and Costs Among Migraine Patients in the United States.

OBJECTIVE: The goal of this analysis was to provide a contemporary estimate of the burden of migraine, incorporating both direct and indirect costs, by comparing the costs of migraine patients to a matched group of patients without migraine in a large, nationally representative sample of commercially insured patients in the United States. BACKGROUND: Previous studies have shown that the economic burden of migraine in the United States is substantial for payers, patients, and employers. Despite the availability of multiple acute and preventive pharmacological treatment options and a relatively stable migraine prevalence in the United States, there has been a documented increase in migraine-related healthcare resource and pharmacy use. Given the frequently disabling nature of migraine and its high prevalence, especially during peak productive years, and the lack of recent estimates of the burden of migraine, there is a need to update the existing literature with more current data. METHODS: This retrospective, observational cohort study identified migraine patients in the Truven Health Market Scan Research Databases between January 2008 and June 2013. Adult patients had 12 months of continuous enrollment before (baseline period) and after (follow-up period) the day they received migraine diagnoses and/or medications (index) and no diagnosis of HIV or malignancy during the study period. The patients with migraine were matched 1:1 to a group of patients without migraine on demographic variables and index date. Direct healthcare utilization and costs and indirect (absenteeism, short-term disability, and long-term disability) costs were assessed during the 12-month follow-up period and differences between patients with vs without migraine were assessed. Two additional multivariable logistic regression analyses were conducted. First, an analysis was conducted comparing the odds of having a short-term disability claim between patients with and without migraine after controlling for patient demographic and clinical characteristics. A second analysis, conducted among the migraine patients only, compared the odds of having a short-term disability claim between (1) patients treated with acute or preventive migraine medications only during the baseline period and patients with no migraine treatment during baseline and (2) patients treated with both acute and preventive migraine medications during the baseline period and patients with no migraine treatment during baseline, after controlling for patient demographic and clinical characteristics. RESULTS: Migraine patients had total annual direct plus indirect costs that were $8924 (in 2014 United States dollars) higher than those of demographically similar individuals without evidence of migraine. Migraine patients' mean annual direct all-cause healthcare costs were $6575 higher than those of matched patients without migraine ($11,010 [standard deviation = $19,663] vs $4436 [standard deviation=$13,081]; P < .01). Total mean annual indirect costs were $2350 higher in the migraine cohort than in the matched no migraine patients ($11,294 vs $8945. Migraine patients were 2.0 times more likely as their nonmigraine counterparts to use opioids (45.5% vs 21.9%; P < .01) and among patients with opioid prescriptions, migraine patients had 1.8 times the number of opioid prescriptions per patient than did those without migraine (4.9 [standard deviation = 6.9] vs 2.7 [standard deviation = 4.0]; P < .01). After adjusting for baseline demographic and clinical characteristics, migraine patients treated with either acute or preventive migraine medications (odds ratio = 0.81 [95% confidence interval = 0.72-0.91]; P < .01) or both acute and preventive migraine medications during the baseline period (odds ratio = 0.93 [95% confidence interval = 0.89-0.98]; P < .01) were significantly less likely to have short-term disability claims than untreated patients during the follow-up period (Migraine patients with either acute or preventive medications only: 7290/45,632 [16.0%]; with both acute and preventive medications: 3085/14,941 [20.6%]; untreated patients: 1604/11,169 [14.4%] had a short-term disability claim.) However, overall, migraine patients had 1.94 times the odds of having a short-term disability claim than their matched counterparts (95% confidence interval = 1.83-2.05; P < .01; migraine patients: 11,979/71,742 [16.7%]; nonmigraine patients: 4801/71,742 [6.7%] had a short-term disability claim). CONCLUSIONS: Results from this real-world assessment of the economic burden of migraine suggest that migraine imposes a substantial direct and indirect cost burden in the United States. Compared to matched nonmigraine patients, migraine patients were more likely to have work loss and longer periods of work loss, leading to significantly higher indirect costs. Migraine patients also had higher levels of healthcare utilization, despite the relatively stable prevalence of migraine and the available acute and preventive treatment options for migraine management.

Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma.

OBJECTIVE: To examine temporal relationships between tuberous sclerosis complex (TSC) and renal angiomyolipoma diagnosis and outcomes, treatment, and healthcare utilization. METHODS: Administrative data from the MarketScan Commercial Database was used to select TSC-related renal angiomyolipoma patients during 1 January 2000-31 March 2013. Patients were followed until the earliest of inpatient death or end of enrollment or study. Occurrence of kidney-related outcomes, kidney-related procedures, and all-cause healthcare utilization and time to occurrence were reported. Kaplan-Meier curves were used to display the unadjusted distribution of time to outcome. RESULTS: A total of 605 patients were selected (<18 years N = 225; ≥18 years N = 380). Mean time from TSC to renal angiomyolipoma diagnosis was 25.7 months in younger and 16.9 months in older patients. Patients ≥18 years had higher rates of chronic kidney disease (CKD), hematuria, kidney failure, embolization (EMB), and partial and complete nephrectomy compared to patients <18 years (all p < .05). Mean time from TSC-related renal angiomyolipoma diagnosis to CKD, hematuria, kidney failure, EMB, first emergency room and inpatient visits was shorter in older compared to younger patients (all p < .05). Probability of developing CKD was approximately 0.8 and 0.95 within 3 years in younger and older patients, respectively. CONCLUSIONS: Patients with TSC-related renal angiomyolipoma had high rates of kidney-related outcomes and procedures. These events sometimes preceded the angiomyolipoma diagnosis. A key study limitation was that due to the small sample size, results may have been biased by outliers. Research is needed to determine whether earlier angiomyolipoma diagnosis can impact occurrence of events and reduce healthcare utilization.

Healthcare utilization and costs in patients with tuberous sclerosiscomplex-related renal angiomyolipoma.

OBJECTIVE: To quantify healthcare utilization and costs in patients with tuberous sclerosis complex (TSC) and renal angiomyolipoma (AML) in a matched cohort of patients without TSC or AML. METHODS: Administrative data from the MarketScan Research Databases were used to select patients with TSC and renal AML during January 1, 2000-March 31, 2013 from the Commercial database and January 1, 2000-June 30, 2012 from the Medicaid database. Patients were required to have at least 30 days of follow-up from initiation into the study, and were followed until inpatient death, end of insurance coverage, or the end of study. Age, calendar year, and payer-matched controls that had no TSC and no AML were selected. All-cause annualized healthcare utilization and costs were calculated by service category. RESULTS: A total of 218 patients under 18 years and 377 patients 18 years and older with TSC-renal AML were selected from the Commercial database, and matched to 654 and 1,131 controls, respectively. Thirty-eight patients under 18 years and 110 patients 18 years or older with TSC-renal AML were selected from the Medicaid database, and matched to 54 and 212 controls, respectively. Within the Commercial cohort, and across both age groups, TSC-renal AML patients utilized more healthcare services than their matched controls. Within the Medicaid cohort, in both age groups, utilization was higher in TSC-renal AML patients vs control patients for inpatient admissions, emergency room visits, physician office visits, and hospital-based outpatient visits. Across age groups and in both the Commercial and Medicaid cohorts, the annual average total costs were significantly higher in TSC-renal AML patients compared to control patients (p < 0.05 for all). Healthcare costs ranged from $29,240-$48,499 for TSC-renal AML patients and from $2,082-$10,864 for control patients. CONCLUSIONS: Compared to controls, TSC-renal AML patients incurred substantially higher annual healthcare utilization and costs.

Long-term Clinical Morbidity in Patients With Renal Angiomyolipoma Associated With Tuberous Sclerosis Complex.

OBJECTIVE: To estimate the incidence rates of kidney-related clinical outcomes among patients with tuberous sclerosis complex (TSC)-related angiomyolipoma (AML) compared to an age-matched control cohort in the United States. MATERIALS AND METHODS: This was a retrospective, observational study. Administrative data from the MarketScan Research Databases were used to select patients with TSC and renal AML. An age-matched group with no TSC or renal AML was identified for comparison. Outcomes were incidence rates per 100 patient-years and number of months to development of hematuria, chronic kidney disease, renal hemorrhage, kidney failure, and inpatient death. RESULTS: Among the commercially insured TSC-renal AML patients (N = 605) and matched controls (N = 1815), 37.2% were <18 years old. Among Medicaid TSC-renal AML patients (N = 246) and matched controls (N = 738), 38.6% were aged <18. In the commercial sample, in both age groups (<18 and ≥18), the incidence rate of each clinical outcome measured was higher in the TSC-renal AML cohort than in the control cohort, with several differences reaching statistical significance. Compared with younger patients, older TSC-renal AML patients had higher incidence rates of clinical outcomes (hematuria: 20.4 vs 8.7; chronic kidney disease: 9.6 vs 3.5; renal hemorrhage 2.7 vs 0.7; kidney failure: 1.9 vs 0.4) and took less time on average to develop each clinical outcome. A similar pattern of results was observed among patients with Medicaid insurance. CONCLUSION: TSC-renal AML patients are at significantly higher risk for renal morbidity relative to the general population.

Rates of interventional procedures in patients with tuberous sclerosis complex-related renal angiomyolipoma.

OBJECTIVE: To describe rates of renal artery embolization, partial nephrectomy, and complete nephrectomy in patients with tuberous sclerosis complex (TSC) and renal angiomyolipoma. METHODS: Data from the MarketScan® Research Databases were used to select patients with TSC and renal angiomyolipoma during January 1, 2000-March 31,2013 (Commercial database) and January 1, 2000-June 30, 2012 (Medicaid database). Patients had at least 30 days of follow-up and were followed until the earliest of inpatient death, end of enrollment, or end of study. Rates of embolization and nephrectomy were calculated. RESULTS: In total, 218 patients <18 years (mean = 9.7 years) and 378 patients ≥18 years (mean 36.9 years) were selected from the Commercial database. Fifty-nine patients <18 years (mean = 7.2 years) and 117 patients ≥18 years (mean = 37.2 years) were selected from the Medicaid database. Follow-up in the Medicaid cohorts was approximately twice that of the Commercial cohorts. Among patients in the study, 24.2% had at least one interventional procedure: 15.2% had embolization, 5.2% had partial nephrectomy, and 7.6% had complete nephrectomy. Within the Commercial cohort ≥18 years, 18.5% had embolization, 7.7% had partial nephrectomy, and 11.4% had complete nephrectomy. Corresponding percentages in the Medicaid adult cohort were 17.1%, 5.1%, and 4.3%. Repeat embolization procedures occurred in up to 7.7% of Commercial patients and in up to 6.8% of Medicaid patients. Repeat partial nephrectomy occurred in up to 4.5% and 1.7% of Commercial and Medicaid patients, respectively. CONCLUSIONS: Approximately 25% of patients with TSC-renal angiomyolipoma experienced embolization or nephrectomy, with some patients undergoing repeat procedures. Study limitations included small sample sizes, the majority of the study period occurred prior to the approval of mammalian target of rapamycin inhibitors for the treatment of TSC-renal AML, and results may not be generalizable to patients with insurance other than commercial or Medicaid.

Retrospective study comparing healthcare costs and utilization between commercially insured patients with type 2 diabetes mellitus who are newly initiating exenatide once weekly or liraglutide in the United States.

OBJECTIVE: To compare healthcare costs and utilization between commercially insured patients with type 2 diabetes mellitus (T2DM) in the United States newly initiating exenatide once weekly (QW) or liraglutide. METHODS: This retrospective cohort study used US administrative claims data to study patients with T2DM initiating exenatide QW or liraglutide (initiated therapy = index therapy). Patients were included if they had T2DM, were glucagon-like peptide-1 receptor agonist (GLP-1RA) naïve, initiated exenatide QW or liraglutide from 1 February 2012 to 1 October 2012 (date of initiation = index), were ≥18 years at index, and had continuous enrollment for 12 months before (baseline) to 6 months after index (follow-up). Study outcomes were overall and diabetes-specific healthcare utilization and costs. Multivariable regressions compared the study outcomes between exenatide QW and liraglutide, adjusting for potential confounders. Sensitivity analyses were performed to assess liraglutide by dose (1.2 mg/1.8 mg). RESULTS: The study sample included 9106 liraglutide (4188, 1.2 mg; 4918, 1.8 mg) patients and 2445 exenatide QW patients. In multivariable-adjusted analyses, compared with liraglutide patients, exenatide QW patients had statistically significantly lower odds of overall inpatient admissions (odds ratio [OR] = 0.80, p = 0.046) and diabetes-specific (OR = 0.83, p = 0.026) inpatient admissions, similar overall total costs ($7833 exenatide QW, $8296 liraglutide, p = 0.069) and diabetes-specific total costs ($3610 exenatide QW, $3736 liraglutide, p = 0.298), and statistically significantly lower overall medical costs ($3939 exenatide QW, $4652 liraglutide, p = 0.008) and diabetes-specific medical costs ($1161 exenatide QW, $1469 liraglutide, p = 0.007). Sensitivity analyses assessing liraglutide by dose were directionally consistent. Unadjusted exploratory analyses showed that exenatide QW patients obtained a greater median number of days supplied for their GLP-1RA during follow-up (141 days) than liraglutide patients (124 days). CONCLUSIONS: In this 6 month follow-up study, patients receiving exenatide QW had similar total healthcare costs but lower odds of inpatient admission and lower medical costs compared with patients receiving liraglutide.

Retrospective study of adherence to glucagon-like peptide-1 receptor agonist therapy in patients with type 2 diabetes mellitus in the United States.

INTRODUCTION: Greater adherence to medications has been broadly demonstrated to be associated with improved clinical outcomes. However, there is limited real-world evidence on adherence to glucagon-like peptide-1 receptor agonist (GLP-1RA) therapy in patients with type 2 diabetes mellitus (T2DM). METHODS: This retrospective cohort study used United States administrative claims data to compare adherence to GLP-1RAs in T2DM patients initiating exenatide once weekly (QW), exenatide twice daily (BID), or once-daily liraglutide (initiated therapy = index therapy). Patients were included if they had T2DM, were GLP-1RA-naïve, initiated a GLP-1RA from 02/01/2012-01/31/2013 (date of initiation = index), were ≥18 years at index, and had continuous enrollment for 12 months before (baseline) to 6 months after index (follow-up). Study outcome was index GLP-1RA adherence (proportion of days covered [PDC] during follow-up, dichotomized at ≥80% vs. <80%, and at ≥90% vs. <90%). Multivariable logistic regressions compared adherence between the GLP-1RAs, adjusting for potential confounders. Sensitivity analyses were performed separating liraglutide by dose (1.2 mg/1.8 mg). RESULTS: Study sample included 4,041 exenatide QW, 4,586 exenatide BID, and 14,211 liraglutide (6,641 1.2 mg, 7,570 1.8 mg) patients. Median unadjusted PDC values were 0.783 for exenatide QW, 0.500 exenatide BID, 0.722 liraglutide, 0.761 liraglutide 1.2 mg, and 0.683 liraglutide 1.8 mg. Compared with patients treated with either exenatide BID or liraglutide, patients treated with exenatide QW had a statistically significantly greater multivariable-adjusted odds of achieving adherence of ≥80% (odds ratio vs. exenatide QW (OR) = 0.41 for exenatide BID; 0.80, liraglutide; 0.87, liraglutide 1.2 mg; 0.75, liraglutide 1.8 mg) and ≥90% (OR = 0.31 for exenatide BID; 0.60 liraglutide; 0.66 liraglutide 1.2 mg; 0.56 liraglutide 1.8 mg) (all P < 0.001). CONCLUSION: Patients initiating exenatide QW had significantly higher adjusted odds of adherence compared with patients initiating other GLP-1RAs. Given differences in adherence across the GLP-1RAs, research correlating these factors with clinical and economic outcomes is warranted.

Red blood cell (RBC) transfusion rates among US chronic dialysis patients during changes to Medicare end-stage renal disease (ESRD) reimbursement systems and erythropoiesis stimulating agent (ESA) labels.

BACKGROUND: Several major ESRD-related regulatory and reimbursement changes were introduced in the United States in 2011. In several large, national datasets, these changes have been associated with decreases in erythropoiesis stimulating agent (ESA) utilization and hemoglobin concentrations in the ESRD population, as well as an increase in the use of red blood cell (RBC) transfusions in this population. Our objective was to examine the use of RBC transfusion before and after the regulatory and reimbursement changes implemented in 2011 in a prevalent population of chronic dialysis patients in a large national claims database. METHODS: Patients in the Truven Health MarketScan Commercial and Medicare Databases with evidence of chronic dialysis were selected for the study. The proportion of chronic dialysis patients who received any RBC transfusion and RBC transfusion event rates per 100 patient-months were calculated in each month from January 1, 2007 to March 31, 2012. The results were analyzed overall and stratified by primary health insurance payer (commercial payer or Medicare). RESULTS: Overall, the percent of chronic dialysis patients with RBC transfusion and RBC transfusion event rates per 100 patient-months increased between January 2007 and March 2012. When stratified by primary health insurance payer, it appears that the increase was driven by the primary Medicare insurance population. While the percent of patients with RBC transfusion and RBC transfusion event rates did not increase in the commercially insured population between 2007 and 2012 they did increase in the primary Medicare insurance population; the majority of the increase occurred in 2011 during the same time frame as the ESRD-related regulatory and reimbursement changes. CONCLUSIONS: The regulatory and reimbursement changes implemented in 2011 may have contributed to an increase in the use of RBC transfusions in chronic dialysis patients in the MarketScan dataset who were covered by Medicare plus Medicare supplemental insurance.

Impact of Out-of-pocket Costs on Varenicline Utilization and Persistence.

Background: Varenicline is a smoking cessation medication. Objectives: We analyzed patients' out-of-pocket costs and utilization of and persistence with varenicline. Methods: De-identified claims data in the MarketScan® Commercial Claims and Encounters Database were analyzed retrospectively. Participants were all patients at least 18 years of age continuously enrolled in plans during 2009. Plans were categorized according to restriction (no coverage; prior authorization; smoking cessation program requirement; no restrictions) and out-of-pocket cost for a 30-day supply (low:

Impact of access restrictions on varenicline utilization.

AIM: To assess the impact of access restrictions on varenicline utilization. METHODS: Employer-sponsored health plans contributing to the MarketScan Commercial Claims and Encounters Database were categorized according to 2009 varenicline access restrictions: no coverage; prior authorization; smoking cessation program requirement; no restrictions. The cohort comprised all adults continuously enrolled in plans during 2009. Each restriction cohort was compared with the no restrictions cohort using descriptive analyses. Data were assessed using logistic regression; demographic and clinical characteristics were covariates. RESULTS: In this study (no coverage, n = 454,419; prior authorization, n = 171,530; smoking cessation program, n = 108,181; no restrictions, n = 607,389), compared with the no restrictions cohort, the odds of treatment were 71% lower (odds ratio: 0.29; 95% CI: 0.26, 0.31) in the smoking cessation program cohort (p < 0.001) and 80% lower (odds ratio: 0.20; 95% CI: 0.19, 0.22) in the prior authorization cohort (p < 0.001). CONCLUSIONS: Access restrictions were associated with significantly lower odds for varenicline utilization.