A74 COST-EFFECTIVENESS OF VEDOLIZUMAB COMPARED TO INFLIXIMAB FOR THE MANAGEMENT OF MODERATE-TO-SEVERE ULCERATIVE COLITIS
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Notice bibliographique
Résumé
Ulcerative colitis (UC) is a relapsing and remitting condition, characterized by inflammation and ulceration in the colon and rectum. Biologic therapies have shown to be effective in inducing and maintaining remission in patients with UC, however there is no general consensus regarding which biologics should be used as first-line therapy for patients with UC. In order to decide which biologics should be used, the cost of the drugs needs to be taken into consideration. Infliximab and vedolizumab are commonly used biologics for UC, however it is unknown which biologic is more cost-effective as first-line therapy for patients with moderate-to-severe disease. The aim of our study was to compare the cost-effectiveness of vedolizumab to infliximab for the management of moderate-to-severe ulcerative colitis. A Markov model was constructed to simulate the clinical disease course of UC patients after initiating either infliximab or vedolizumab. Drug costs were obtained from the Alberta Health Drug Benefit List, and the remaining costs were determined from the CIHI Patient Cost Estimator. Transition probabilities were attained from a review of the literature, and loss of response and complication rates for infliximab and vedolizumab were obtained from the ACT and GEMINI trials, respectively. Previously published utility values were used to assess patient’s quality of life in each disease state. Our main analysis used a time horizon of 5 years due to the lack of long-term data on these therapies. Time horizons of 10 and 15 years were assessed in our sensitivity analysis by extrapolation. Probabilistic sensitivity analysis was performed to characterize uncertainty related to all input parameters. Using a 5-year time horizon, vedolizumab costs $107,667 per patient and yields 2.23 quality-adjusted life years (QALYs). Infliximab costs $127,883 per patient and yields 2.30 QALYs. At a willingness-to-pay (WTP) threshold of $50,000 per QALY, probabilistic sensitivity analysis revealed that vedolizumab had a 69% probability of being cost-effective, and infliximab has a 31% probability of being cost-effective. Sensitivity analysis results for 10- and 15-year time horizons are displayed in Table 1. Infliximab and vedolizumab as first-line therapies have similar effectiveness, however vedolizumab’s lower cost results in it being considered more cost-effective compared to infliximab for the management of UC. Table 1. Cost and effectiveness of infliximab versus vedolizumab for ulcerative colitis patients using multiple time horizons The Centre of Excellence for Gastrointestinal Inflammation and Immunity Research
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle