Comparative effectiveness, safety, and costs of rivaroxaban and warfarin among morbidly obese patients with atrial fibrillation.
Am Heart J
; 212: 113-119, 2019 06.
Article
em En
| MEDLINE
| ID: mdl-30981035
ABSTRACT
BACKGROUND:
There are limited data regarding clinical outcomes and healthcare resource utilization of direct oral anticoagulants (DOACs) in patients with atrial fibrillation (AF) who are morbidly obese (body mass index >40 kg/m2 or body weight >120 kg).METHODS:
Using data from 2 US healthcare claims databases, we identified patients initiating rivaroxaban or warfarin who had ≥1 medical claim with an AF diagnosis, a diagnostic code for morbid obesity (ICD-9 278.01, V85.4%; ICD-10 E66.01%, E66.2%, Z68.4%), and a minimum continuous enrollment of 12 months before and 3 months after treatment initiation. Patients were excluded if they had mitral stenosis, a mechanical heart valve procedure, an organ/tissue transplant, or an oral anticoagulant prescription prior to the index date. Rivaroxaban and warfarin patients were 11 propensity score matched. Conditional logistic regression was used to compare ischemic stroke/systemic embolism and major bleeding risk. Generalized linear models were used to compare healthcare resource utilization and costs.RESULTS:
A total of 3563 matched pairs of morbidly obese AF patients treated with rivaroxaban or warfarin were identified. The majority (81.4%) of patients in the rivaroxaban cohort were receiving the 20 mg dose. The rivaroxaban and warfarin cohorts were well balanced after propensity score matching. The risks of ischemic stroke/systemic embolism and major bleeding were similar for rivaroxaban and warfarin users (stroke/systemic embolism 1.5% vs 1.7%; odds ratio [OR] 0.88; 95% confidence interval [CI] 0.60, 1.28; P = .5028; major bleeding 2.2% vs 2.7%; OR 0.80; 95% CI 0.59, 1.08; P = .1447). Total healthcare costs including medication costs per patient per year (PPPY) were significantly lower with rivaroxaban versus warfarin ($48,552 vs $52,418; P = .0025), which was primarily driven by lower hospitalization rate (50.2% vs 54.1%; P = .0008), shorter length of stay (7.5 vs 9.1 days; P = .0010), and less outpatient service utilization (86 vs 115 visits PPPY; P < .0001).CONCLUSIONS:
Morbidly obese AF patients treated with rivaroxaban had comparable risk of ischemic stroke/systemic embolism and major bleeding as those treated with warfarin, but lower healthcare resource utilization and costs.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fibrilação Atrial
/
Varfarina
/
Obesidade Mórbida
/
Custos de Medicamentos
/
Acidente Vascular Cerebral
/
Rivaroxabana
Tipo de estudo:
Etiology_studies
/
Health_economic_evaluation
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Male
/
Middle aged
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article