Anagha Nadkarni

Evaluating medication-related services in a hospital setting using the disconfirmation of expectations model of satisfaction

BACKGROUND Patient satisfaction is considered an important outcome measure of services and associated with behavioral intentions. The appraisal process commonly used in satisfaction models is the disconfirmation of expectations. A patient compares his or her experience to preexisting expectations. The resulting satisfaction from this comparison is dependent on whether the patients expectations are superior, inferior, or just as expected. OBJECTIVES The aims of this study were to (1) determine the relationship between disconfirmation of expectations with medication-related services and patient satisfaction with medical care; and (2) determine if patient satisfaction is related to the likelihood to say good things about the medical care provided at the hospital to family and friends. METHODS A cross-sectional, nonexperimental study design was implemented to test the disconfirmation of expectations model. Patients on warfarin therapy and recently discharged from an acute care hospital to their homes were surveyed by mail. The survey asked about how well the hospital services related to medication therapy met patient expectations. Satisfaction with medical care and the likelihood of positive word of mouth regarding the medical care were also measured. Structural equation modeling (SEM) was used to test the model. RESULTS The survey response rate was 34% (n=187). Factor analysis of the 7 disconfirmation of expectation items resulted in a 2-factor solution: (1) medication counseling and (2) discharge medication services. The SEM demonstrated that the model was significant; however, the disconfirmation of expectation items did not significantly relate to the 1-item satisfaction measure. Patient satisfaction and the behavioral intentions measures were significantly related. A post hoc analysis using SEM demonstrated that the disconfirmation of expectations factors did significantly relate to a higher-order latent construct. This construct also related to patient satisfaction. CONCLUSION The disconfirmation of expectations has a role in a postservice experience response expressed by the patient, but not as a direct antecedent to patient satisfaction. Opportunities to improve the model are the use of a multi-item satisfaction measure and the inclusion of patient affect.

Effectiveness and safety of apixaban versus warfarin in non-valvular atrial fibrillation patients in "real-world" clinical practice: a propensity-matched analysis of 76,940 patients

Summary The ARISTOTLE trial showed a risk reduction of stroke/systemic embolism (SE) and major bleeding in non-valvular atrial fibrillation (NVAF) patients treated with apixaban compared to warfarin. This retrospective study used four large US claims databases (MarketScan, PharMetrics, Optum, and Humana) of NVAF patients newly initiating apixaban or warfarin from January 1, 2013 to September 30, 2015. After 1:1 warfarin-apixaban propensity score matching (PSM) within each database, the resulting patient records were pooled. Kaplan-Meier curves and Cox proportional hazards models were used to estimate the cumulative incidence and hazard ratios (HRs) of stroke/SE and major bleeding (identified using the first listed diagnosis of inpatient claims) within one year of therapy initiation. The study included a total of 76,940 (38,470 warfarin and 38,470 apixaban) patients. Among the 38,470 matched pairs, 14,563 were from MarketScan, 7,683 were from PharMetrics, 7,894 were from Optum, and 8,330 were from Humana. Baseline characteristics were balanced between the two cohorts with a mean (standard deviation [SD]) age of 71 (12) years and a mean (SD) CHA 2 DS 2 -VASc score of 3.2 (1.7). Apixaban initiators had a significantly lower risk of stroke/SE (HR: 0.67, 95 % CI: 0.59–0.76) and major bleeding (HR: 0.60, 95 % CI: 0.54–0.65) than warfarin initiators. Different types of stroke/SE and major bleeding – including ischaemic stroke, haemorrhagic stroke, SE, intracranial haemorrhage, gastrointestinal bleeding, and other major bleeding – were all significantly lower for apixaban compared to warfarin treatment. Subgroup analyses (apixaban dosage, age strata, CHA 2 DS 2 -VASc or HAS-BLED score strata, or dataset source) all show consistently lower risks of stroke/SE and major bleeding associated with apixaban as compared to warfarin treatment. This is the largest “real-world” study on apixaban effectiveness and safety to date, showing that apixaban initiation was associated with significant risk reductions in stroke/SE and major bleeding compared to warfarin initiation after PSM. These benefits were consistent across various high-risk subgroups and both the standard-and low-dose apixaban dose regimens. Note: The review process for this manuscript was fully handled by Christian Weber, Editor in Chief. Supplementary Material to this article is available online at www.thrombosis-online.com .

Incidence of Cardiovascular Outcomes and Diabetes Mellitus Among Users of Second-Generation Antipsychotics

OBJECTIVE To examine the risk of cardiovascular outcomes and diabetes mellitus in patients prescribed second-generation antipsychotics. METHOD From the MarketScan claims database, nondiabetic adults prescribed aripiprazole between July 2003 and March 2010 were propensity score-matched with patients prescribed olanzapine, quetiapine, risperidone, and ziprasidone. Patients were followed through the claims for International Classification of Diseases, Ninth Revision codes indicating myocardial infarction, stroke, heart failure, coronary bypass/angioplasty procedures, and incident diabetes. Incidence rates of each outcome were calculated and compared between aripiprazole and the other second-generation antipsychotics using Cox models. RESULTS Aripiprazole initiators were matched 1:1 to 9,917 olanzapine, 14,935 quetiapine, 10,192 risperidone, and 5,696 ziprasidone initiators. Increased risk was found with olanzapine for stroke (hazard ratio = 1.43; 95% confidence interval, 1.05-1.95) and any cardiovascular event (1.28; 1.05-1.55); with quetiapine for stroke (1.58; 1.19-2.09), heart failure (1.55; 1.15-2.11), and any cardiovascular event (1.50; 1.25-1.79); and with risperidone for stroke (1.54; 1.12-2.12), heart failure (1.43; 1.02-1.99), and any cardiovascular event (1.49; 1.21-1.83). Ziprasidone showed no significant difference in risk from aripiprazole for any outcome. Incidence of diabetes ranged from 18 to 21 events per 1,000 person-years in each cohort and did not differ significantly between second-generation drugs. CONCLUSIONS This analysis of real-world data found lower risk of some cardiovascular events with aripiprazole than with olanzapine, quetiapine, or risperidone, but no differences were found with ziprasidone. There were no significant differences in risk of diabetes. Limitations include use of claims data and inability to adequately control for differential prescribing of second-generation antipsychotics to patients at higher risk of diabetes.

Development and Validation of a Short Form of the Valued Life Activities Disability Questionnaire for Rheumatoid Arthritis

To develop and validate a shortened version of the Valued Life Activities disability and accommodations scale (VLA) for individuals with rheumatoid arthritis (RA).

Mixed treatment comparison of efficacy and tolerability of biologic agents in patients with rheumatoid arthritis.

Abstract Objective: To determine the comparative efficacy and tolerability of abatacept and tumor necrosis factor inhibitors (TNFi) in patients with rheumatoid arthritis (RA) and inadequate response to conventional disease modifying anti-rheumatic drugs (DMARDs). Research design and methods: A systematic review identified RCTs in RA patients who responded inadequately to conventional DMARDs and were treated with one of the following biologic agents: abatacept, adalimumab, etanercept, infliximab, certolizumab pegol, or golimumab. Bayesian hierarchical models were used to compare efficacy and tolerability outcomes of abatacept and combined TNFi at 6 months and 1 year. Results: In this mixed treatment comparison (MTC), the likelihood of achieving ACR response was comparable between abatacept and combined TNFi at 6 months for ACR20, 50, and 70: (odds ratio [OR] = 0.98 [95% confidence interval (CI): 0.73, 1.27], 0.99 [0.73, 1.31], and 0.91 [0.62, 1.27], respectively); and at 12 months for ACR20 (OR = 1.27 [0.92, 1.71]) and ACR50 (1.21 [0.82, 1.68]), with a higher likelihood of achieving an ACR70 response at 12 months (1.41 [1.02, 1.82]). Odds of DAS28 remission at 12 months was greater for abatacept than the combined TNFi (OR = 2.03 [1.04, 3.58]). Abatacept had better tolerability, defined as a lower likelihood of withdrawal due to adverse events, at both 6 and 12 months (OR = 0.38 [0.10, 0.88] and 0.51 [0.27, 0.86], respectively). These analyses include indirect comparisons across clinical trials and are not a replacement for head-to-head data. While all TNFi have been grouped into one class, there may be some differences between the individual TNFi that are not captured in our study. Conclusions: In this MTC, abatacept demonstrated similar efficacy at 6 months, a higher likelihood of achieving ACR70 response and DAS28 remission at 12 months and better tolerability relative to the combined TNFi in patients with RA who had an inadequate response to conventional DMARDs.

Medical costs and utilization in patients with depression treated with adjunctive atypical antipsychotic therapy

Objective To compare total medical costs and utilization over a 12-month period in commercially insured patients receiving FDA-approved adjunctive atypical antipsychotics (aripiprazole, olanzapine, or quetiapine) for depression. Methods A retrospective claims analysis was conducted from 2005–2010 using the PharMetrics database. Subjects were adult commercial health-plan members with depression, identified using International Classification of Diseases codes and followed for 12 months after augmentation with an atypical antipsychotic. Outcomes included total medical costs, hospitalization, and ER visits. Generalized linear models and logistic regression were used to compare the total medical costs and the odds of hospitalization and ER visits between the treatment groups after adjusting for baseline demographic and clinical characteristics. Results A total of 9675 patients with depression were included in the analysis, of which 68.4% were female, with a mean age of 45.2 (±12.0) years. Adjusted 12-month total medical costs were higher for olanzapine (

Interpersonal interactions, job demands and work-related outcomes in pharmacy

14,275) and quetiapine (

Misuse of over‐the‐counter medications among community‐dwelling older adults and associated adverse drug events

12,998) compared to aripiprazole (

Medical Costs and Hospitalizations Among Patients with Depression Treated with Adjunctive Atypical Antipsychotic Therapy: An Analysis of Health Insurance Claims Data

9,801; P < 0.05 for all comparisons with aripiprazole). When divided into inpatient and outpatient costs, olanzapine and quetiapine had significantly higher adjusted inpatient costs compared to aripiprazole (

A simple and promising tool to improve self-monitoring of blood glucose in patients with diabetes

6,124 and