PP64 Economic Evaluation For Esophageal Cancer Screening In China

2019 ◽  
Vol 35 (S1) ◽  
pp. 49-49
Author(s):  
Yuanyuan Li ◽  
Lingbin Du ◽  
Xiaoqian Hu ◽  
Shuyan Gu ◽  
Xuemei Zhen ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Esophageal Cancer ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
Cohort Analysis ◽  
Cost Utility ◽  
Low Grade ◽  
Age Group ◽  
Life Years

IntroductionThe aim of the study was to estimate the cost-effectiveness of esophageal cancer (EC) screening compared to non-screening in China.MethodsA Markov model was conducted that followed the history of EC. Screening strategies targeted a population aged 40-69 years, classified into six age groups. Each age group had three cohorts: screening without follow-up, screening with yearly follow-up for low-grade intraepithelial neoplasia (LGIN), and non-screening. Life years (LYs) and quality-adjusted life years (QALYs) presented the effectiveness and utility. The incremental cost-effectiveness ratio (ICER) and incremental cost-utility ratio (ICUR) were evaluating indicators. Eighteen cohorts from 100,000 hypothetical individuals were used to run the model, until aged 79 years or death. Costs were changed into USD using the purchasing power parity of 3.506 in 2017. The willingness-to-pay was set as three times the gross domestic product per capita (USD 51,340.6) in 2017. A sensitivity analysis was introduced to assess model robustness.ResultsScreening with follow-up compared to non-screening, ages 40-44, 45-49, and 50-54 years, showed cost-effectiveness, with one LY gained costing USD 6,875.0, USD 9,204.6, and USD 25,278.6, respectively. Ages 40-44 and 45-49 years explained cost-utility, with ICURs of USD 6,709.4/QALY and USD 13,991.4/QALY, respectively. Screening without follow-up compared to non-screening, ages 40-54 years, addressed cost-effectiveness, with one LY gained costing USD 6,934.8, USD 9,760.0, and USD 35,126.0 in ages 40-44, 45-49, and 50-54 years, respectively; the 40-44 years age group demonstrated cost-utility with an ICUR of USD 8,512.3/QALY. Screening with follow-up compared to screening without follow-up, all ages, explained cost-effectiveness and cost-utility. The probabilistic sensitivity analysis supported the outcome of the base cohort analysis.ConclusionsCompared to non-screening, screening with follow-up targeting ages 40-54 years was highly recommended with the ICER as the evaluated indicator, whereas it targeting ages 40-49 years was suggested with the ICUR as indicator.

scholarly journals Modeling the Cost-effectiveness of Esophageal Cancer Screening in China

2020 ◽  
Author(s):  
Yuanyuan LI ◽  
Lingbin Du ◽  
Youqing Wang ◽  
Yuxuan Gu ◽  
Xuemei Zhen ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Low Grade ◽  
Decision Analysis Model ◽  
Endoscopic Screening ◽  
Lugol’S Iodine ◽  
Iodine Staining ◽  
Life Years ◽  
The Cost

Abstract Background This study aimed to examine the cost-effectiveness of the standard endoscopic screening with Lugol’s iodine staining in EC screening in China. Methods The Markov decision analysis model with eleven states was built. Separate cohorts were conducted consisting of those aged 40 to 69 years, classified as six age groups with five years interval. Three different strategies assumed for each cohort:(1) no screening; (2) endoscopic screening with Lugol’s iodine staining with annual follow-up for Low-grade intraepithelial neoplasia; (3) endoscopic screening with Lugol’s iodine staining without follow-up. Quality-adjusted life-years (QALYs) served as effectiveness. The incremental cost-effectiveness ratio (ICER) was identified as the evaluating indicators. Sensitivity analysis was introduced to assess the robustness of the model. Results For aged 40-49 years, the non-screening strategies were absolutely dominated with both more costs and less QALY, while for aged 50-69 years, the screening scenarios were absolutely dominated. Screening with follow-up was the preferred strategy. Compared to non-screening, screening with follow-up saved USD 10942.57 and USD 611.73 per QALY gained for aged 40-44 and 45-49 years separately. One-way sensitivity analysis addressed that the risk ratio of the EC incidence in population after screening compared to people without screening and the utility of precancerous lesion could affect the cost-effectiveness of the screening strategy. However, the probabilistic sensitivity analysis supported the results of the base case analysis. Conclusions EC screening with follow-up targeting aged 40-49 years was the most cost-effective strategy.

Polatuzumab vedotin-bendamustine-rituximab (PBR) versus tafasitamab-lenalidomide (TafaL) in ASCT-transplant ineligible relapsed/refractory diffuse large B-cell lymphoma (R/R DLBCL): Economic evaluation including novel metrics.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e19535-e19535
Author(s):  
Matthias Calamia ◽  
Ali McBride ◽  
Ivo Abraham
Keyword(s):  
Cost Effectiveness ◽  
Incremental Cost ◽  
B Cell Lymphoma ◽  
Cost Utility ◽  
Sensitivity Analyses ◽  
Economic Evaluations ◽  
Survival Outcomes ◽  
Base Case ◽  
Life Years

e19535 Background: PBR and TafaL are two recently regulatory approved regimens that offer treatment options for R/R DLBCL patients who are ASCT ineligible or choose not to undergo ASCT. PBR is administered over 6 cycles, whereas TafaL is sustained until disease progression or death. We report here on an independent, naïve comparative, pharmacoeconomic evaluation of both regimens. Methods: Cost effectiveness and cost utility analyses were performed using a Markov model with 3 health states (progression free survival (PFS), post progression survival (PPS), death) parametrically extrapolated over a 5-year (y) time horizon (US payer perspective; 2020 USD). Cost inputs included main treatment, premedication, drug administration, adverse event management, and physician and laboratory fees. Incremental cost effectiveness ratios (ICER) and cost-utility ratios (ICUR) estimated the incremental costs to gain 1 unadjusted (LY) or quality adjusted life years (QALY), respectively. A novel metric of the incremental cost per 1% gain in probability of achieving objective response (OR), PFS and overall survival (OS) at trial follow up (̃2y) and PFS and OS at 5y with TafaL over PBR were estimated. Deterministic (DSA) and probabilistic (PSA) sensitivity analyses complemented base case analyses (BCA). Willingness to pay (WTP) thresholds were estimated. Results: At trial follow up (̃2y), PFS and OS rates were 38% and 63% for TafaL vs rates of 18% and 27.5% for PBR. The corresponding 5y PFS and OS rates were 13% and 32.7% for TafaL vs 5.2% and 11.3% for PBR. In BCAs, 5y TafaL costs ($470,949) exceeded PBR’s ($251,615) by $219,334 for incremental gains of 0.71 LY and 0.32 QALY. This yielded BCA ICER of $307,840/LYg and ICUR of $689,314/QALYg attenuated in PSA estimates of ICER of $280,042/LYg and ICUR of $589,215/QALYg. In DSAs, TafaL PFS utility value and PBR treatment costs were the most influential parameters. In PSAs, TafaL had a 50% probability of being cost effective at WTPs of $278,050/LYg and $560,360/QALYg. The incremental cost per 1% gain in probability to achieve OR, PFS and OS at follow up were $7,714, $5,785 and $3,259; and $28,120 and $10,249 for PFS and OS at 5 years. Conclusions: Considering that economic evaluations are intended to inform (but not set) policy, this independent analysis demonstrated that sustained TafaL treatment is associated with better survival outcomes than PBR though at greater cost. The incremental costs to gain a 1% improvement in 2y and 5y survival outcomes with TafaL over PBR were modest, underscoring the longer-term benefit of TafaL over PBR in pts ineligible for or opting out of ASCT.

Cost-effectiveness of upper extremity dry needling in the rehabilitation of patients with stroke

2021 ◽  
pp. 096452842110557
Author(s):  
Daniel Fernández Sanchis ◽  
Juan Nicolás Cuenca Zaldívar ◽  
Sandra Calvo ◽  
Pablo Herrero ◽  
Manuel Gómez Barrera
Keyword(s):  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
Upper Extremity ◽  
Economic Value ◽  
Cost Effective ◽  
Cost Utility ◽  
Dry Needling ◽  
Levels Of Care ◽  
Life Years

Introduction: Dry needling (DN) has been shown to be effective for the treatment of upper extremity hypertonia in patients with stroke. Purpose: To evaluate the cost-effectiveness of DN in patients with stroke. Methods: A cost-effectiveness analysis was performed in a research study conducted at a Spanish public hospital where patients were classified into two groups with or without DN. Hypertonia was measured using the Modified Modified Ashworth Scale (MMAS), and quality of life (QOL) was assessed using the EuroQoL 5-dimension questionnaire. Data regarding the effects and costs of physiotherapy were presented by calculating the mean and 95% confidence interval. The health outcomes were evaluated considering the rate of responders to the treatment based on the MMAS. Spanish preference weights were used to estimate quality-adjusted life years (QALYs). The incremental cost-effectiveness ratio (ICER) and incremental cost-utility ratio (ICUR) were calculated to determine the economic value of DN. Results: Eighty patients with stroke in the subacute stage of recovery were selected to participate in this study. Based on the rate of responders, the ICER of the DN group was very low. Despite the sensitivity analysis performed, the results of the ICUR were not encouraging. Discussion: Cost-effectiveness with responder rate results were favourable for the DN group and were confirmed by the sensitivity analysis according to levels of care. In addition, our findings revealed that 4 weeks of treatment could be more cost-effective than 8 weeks. DN treatment of the upper extremity appears to be cost-effective based on the rate of responders measured using the MMAS scale.

COST-EFFECTIVENESS ANALYSIS OF IVABRADINE IN TREATMENT OF PATIENTS WITH HEART FAILURE IN IRAN

2018 ◽  
Vol 34 (6) ◽  
pp. 576-583 ◽  
Author(s):  
Saeed Taheri ◽  
Elham Heidari ◽  
Mohammad Ali Aivazi ◽  
Mehran Shams-Beyranvand ◽  
Mehdi Varmaghani
Keyword(s):  
Heart Failure ◽  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
Transition Probabilities ◽  
Drug Acquisition ◽  
Sensitivity Analyses ◽  
Baseline Heart Rate ◽  
Life Years ◽  
The Cost

Objectives:This study aimed to assess the cost-effectiveness of ivabradine plus standard of care (SoC) in comparison with current SoC alone from the Iranian payer perspective.Methods:A cohort-based Markov model was developed to assess the incremental cost-effectiveness ratio (ICER) over a 10-year time horizon in a cohort of 1,000 patients. The baseline transition probabilities between New York Heart Association (NYHA), mortality rate, and hospitalization rate were extracted from the literature. The effect of ivabradine on mortality, hospitalization, and NYHA improvement or worsening were retrieved from the SHIFT study. The effectiveness was measured as quality-adjusted life-years (QALYs) using the utility values derived from Iranian Heart Failure Quality of Life study. Direct medical costs were obtained from hospital records and national tariffs. Deterministic and probabilistic sensitivity analyses were conducted to show the robustness of the model.Results:Ivabradine therapy was associated with an incremental cost per QALY of USD $5,437 (incremental cost of USD $2,207 and QALYs gained 0.41) versus SoC. The probabilistic sensitivity analysis showed that ivabradine is expected to have a 60 percent chance of being cost-effective accepting a threshold of USD $6,550 per QALY. Furthermore, deterministic sensitivity analysis indicated that the model is sensitive to the ivabradine drug acquisition cost.Conclusions:The cost-effectiveness model suggested that the addition of ivabradine to SoC therapy was associated with improved clinical outcomes along with increased costs. The analysis indicates that the clinical benefit of ivabradine can be achieved at a reasonable cost in eligible heart failure patients with sinus rhythm and a baseline heart rate ≥ 75 beats per minute (bpm).

scholarly journals Incremental cost-effectiveness of adult spinal deformity surgery: observed quality-adjusted life years with surgery compared with predicted quality-adjusted life years without surgery

2014 ◽  
Vol 36 (5) ◽  
pp. E3 ◽  
Author(s):  
Ian McCarthy ◽  
Michael O'Brien ◽  
Christopher Ames ◽  
Chessie Robinson ◽  
Thomas Errico ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Surgical Treatment ◽  
Incremental Cost ◽  
Adult Spinal Deformity ◽  
Quality Adjusted Life Years ◽  
Life Years ◽  
Nonsurgical Patients ◽  
The Cost ◽  
Quality Adjusted Life

Object Incremental cost-effectiveness analysis is critical to the efficient allocation of health care resources; however, the incremental cost-effectiveness ratio (ICER) of surgical versus nonsurgical treatment for adult spinal deformity (ASD) has eluded the literature, due in part to inherent empirical difficulties when comparing surgical and nonsurgical patients. Using observed preoperative health-related quality of life (HRQOL) for patients who later underwent surgery, this study builds a statistical model to predict hypothetical quality-adjusted life years (QALYs) without surgical treatment. The analysis compares predicted QALYs to observed postoperative QALYs and forms the resulting ICER. Methods This was a single-center (Baylor Scoliosis Center) retrospective analysis of consecutive patients undergoing primary surgery for ASD. Total costs (expressed in 2010 dollars) incurred by the hospital for each episode of surgical care were collected from administrative data and QALYs were calculated from the 6-dimensional Short-Form Health Survey, each discounted at 3.5% per year. Regression analysis was used to predict hypothetical QALYs without surgery based on preoperative longitudinal data for 124 crossover surgical patients with similar diagnoses, baseline HRQOL, age, and sex compared with the surgical cohort. Results were projected through 10-year follow-up, and the cost-effectiveness acceptability curve (CEAC) was estimated using nonparametric bootstrap methods. Results Three-year follow-up was available for 120 (66%) of 181 eligible patients, who were predominantly female (89%) with average age of 50. With discounting, total costs averaged $125,407, including readmissions, with average QALYs of 1.93 at 3-year follow-up. Average QALYs without surgery were predicted to be 1.6 after 3 years. At 3- and 5-year follow-up, the ICER was $375,000 and $198,000, respectively. Projecting through 10-year follow-up, the ICER was $80,000. The 10-year CEAC revealed a 40% probability that the ICER was $80,000 or less, a 90% probability that the ICER was $90,000 or less, and a 100% probability that the ICER was less than $100,000. Conclusions Based on the WHO's suggested upper threshold for cost-effectiveness (3 times per capita GDP, or $140,000 in 2010 dollars), the analysis reveals that surgical treatment for ASD is cost-effective after a 10-year period based on predicted deterioration in HRQOL without surgery. The ICER well exceeds the WHO threshold at earlier follow-up intervals, highlighting the importance of the durability of surgical treatment in assessing the value of surgical intervention. Due to the study's methodology, the results are dependent on the predicted deterioration in HRQOL without surgery. As such, the results may not extend to patients whose HRQOL would remain steady without surgery. Future research should therefore pursue a direct comparison of QALYs for surgical and nonsurgical patients to better understand the cost-effectiveness of surgery for the average ASD patient.

scholarly journals Cost-effectiveness of Ruxolitinib vs Best Available Therapy in the Treatment of Myelofibrosis in Spain

10.36469/9808 ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 162-174
Author(s):  
María Teresa Gómez-Casares ◽  
Juan Carlos Hernández-Boluda ◽  
Antonio Jiménez-Velasco ◽  
Joaquin Martínez-López ◽  
María Giovanna Ferrario ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
End Of Life ◽  
Societal Perspective ◽  
Primary Myelofibrosis ◽  
Janus Kinase ◽  
Lifetime Horizon ◽  
Life Years ◽  
The Cost

Introduction: Primary myelofibrosis (MF) is a rare hematologic disease belonging to the group of Philadelphia-negative chronic myeloproliferative neoplasms. Identification of the Janus Kinase (JAK) gene mutations inaugurated a new era in the targeted therapy of myeloproliferative diseases. Ruxolitinib is the first JAK1/JAK2 inhibitor specifically approved for the treatment of disease-related splenomegaly or symptoms in adult patients with primary myelofibrosis. The objective of this study was to assess the cost-effectiveness of ruxolitinib vs best available therapy (BAT) in MF patients in Spain. Methods: A decision-tree and Markov model were adapted to the Spanish setting to assess the cost-effectiveness of ruxolitinib vs. BAT on a lifetime horizon (≤15 years) from the societal perspective, while healthcare system perspective was included in the one-way sensitivity analysis. The population was assumed to be similar to that of the COMFORT-II clinical trial (CT), which was also the source of treatment efficacy data. BAT composition was derived from the same CT and validated with Spanish experts. Utilities were derived from the COMFORT-I CT. Costs included treatment, management, hospitalizations, emergency and outpatient visits, as well as adverse events and end-of-life costs. Additionally, costs associated to productivity loss were taken into account. Resource use was validated with experts and costs were extracted from Spanish sources. A probabilistic sensitivity analysis was also performed to evaluate the consistency of the results under the uncertainty or variability of the input data. Results: Patients on ruxolitinib accumulated 6.1 life years gained (LYGs), resulting in 73% extra life-years compared to patients treated with BAT (3.5LYs gained). Ruxolitinib provided 4.4 quality-adjusted life years (QALYs), with a 99% improvement compared to BAT (2.2 QALYs). This analysis gave an incremental cost of €47 199 per LYG and an incremental cost of €55 616 per QALY gained from the societal perspective. Conclusions: Ruxolitinib would be cost-effective in Spain according to the end-of-life criteria defined by the NICE and commonly referred for Spain (cost-effectiveness threshold of €61 500/QALY), in line with results published for other European countries.

scholarly journals Modeling the Cost-effectiveness of Esophageal Cancer Screening in China

2020 ◽  
Author(s):  
Yuanyuan LI ◽  
Lingbin Du ◽  
Youqing Wang ◽  
Yuxuan Gu ◽  
Xuemei Zhen ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Esophageal Cancer ◽  
Cost Effectiveness ◽  
Cancer Screening ◽  
Cost Effective ◽  
Endoscopic Screening ◽  
Lugol’S Iodine ◽  
Iodine Staining ◽  
The Cost

Abstract Background : This study aimed to examine the cost-effectiveness of standard endoscopic screening with Lugol’s iodine staining for EC (esophageal cancer) screening in China. Methods : A Markov decision analysis model with eleven states was built. Individuals aged 40 to 69 years were classified into six age groups according to five-year intervals. Three different strategies were adopted for each cohort: (1) no screening; (2) endoscopic screening with Lugol’s iodine staining with annual follow-up for low-grade intraepithelial neoplasia; and (3) endoscopic screening with Lugol’s iodine staining without follow-up. Quality-adjusted life-years (QALYs) indicated the effectiveness . The incremental cost-effectiveness ratio (ICER) was used as the evaluating indicator. Sensitivity analysis was performed to assess the robustness of the model. Results : Screening with follow-up was the undominated strategy, which saved USD 10942.57 and USD 6611.73 for individuals aged 40-44 and 45-49 years, respectively, per QALY gained. For those aged 50-69 years, the nonscreening scenarios were undominated. Screening without follow-up were extended dominated strategies. Compared to screening strategies without follow-up, all the follow-up strategies were found to be cost effective, with the ICER increasing from 299.57 USD/QALY for individuals 40-44 years to 1617.72 USD/QALY for individuals 65-69 years. Probabilistic sensitivity analysis supported the results of the base case analysis. Conclusions : EC screening with follow-up targeting individuals aged 40-49 years was the most cost-effective strategy.

To determine the cost-effectiveness of pemetrexed (PEM) compared to current standards of care in 2nd-line advanced non-small cell lung cancer (NSCLC) from the UK National Health Service (NHS) perspective

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 6540-6540 ◽  
Author(s):  
S. Bhalla ◽  
C. Hibbert ◽  
J. Watkins ◽  
S. Beard ◽  
M. Cetty ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Incremental Cost ◽  
Clinical Trial Data ◽  
Clinical Excellence ◽  
Cost Utility ◽  
Phase Iii ◽  
Standards Of Care ◽  
Life Years ◽  
The Uk ◽  
Current Standards

6540 Objective: To assess the clinical and cost-effectiveness of pemetrexed (PEM) compared with current standards of care (SOC) in 2nd-line advanced NSCLC from a UK perspective. The SOC selected for the evaluation were: (i) docetaxel (DOC) as it is the standard active therapy in the UK and is recommended by the National Institute for Health and Clinical Excellence (NICE) and (ii) best supportive care (BSC) as the majority patients in the UK who fail 1st-line therapy do not receive further chemotherapy. Methods: The analytic technique used was a cost-utility analysis (CUA) in the form of a Markov model. Utilities were generated from 100 members of the general public, considering tumor response status and toxicity, in accordance with the standard NICE appraisal methodology. Clinical inputs were derived from a pooled analysis phase III clinical trial data. Costs were taken from the British National Formulary and UK national databases. The incremental cost-effectiveness ratios (ICERs) are presented for both life-years gained (LYG) and quality-adjusted life- years (QALY) gained. Conclusions: The incremental cost per LY and cost per QALY for pemetrexed in 2nd-line NSCLC are below £20,000, compared to docetaxel and BSC. Based on its survival and toxicity benefits PEM is a cost-effective option in within the UK. No significant financial relationships to disclose. [Table: see text]

scholarly journals Surgery versus medical follow-up in patients with asymptomatic primary hyperparathyroidism: a decision analysis

2005 ◽  
Vol 153 (6) ◽  
pp. 915-927 ◽  
Author(s):  
Karine Sejean ◽  
Sophie Calmus ◽  
Isabelle Durand-Zaleski ◽  
Philippe Bonnichon ◽  
Pierre Thomopoulos ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Cost Effectiveness ◽  
Incremental Cost ◽  
Neck Exploration ◽  
Complication Rates ◽  
Lifetime Horizon ◽  
System Perspective ◽  
Life Years

Objectives: To examine the cost-effectiveness of strategies for management of primary asymptomatic hyperparathyroidism: surgical strategies and medical follow-up versus surgery. Design: We used a Markov state-transition decision-analytic model for an hypothetical cohort of 55-year-old women to compare with a lifetime horizon costs and effectiveness of bilateral neck exploration (BNE), unilateral neck exploration (UNE), video-assisted parathyroidectomy (VAP) and lifelong medical follow-up shifting for either BNE or UNE in case of disease progression. Methods: Data on localization tests, complications and treatment efficacies were derived from a systematic review of the literature. Outcomes were expressed as quality-adjusted life years (QALY). Costs (€2002) discounted at 3% yearly were estimated from the health care system perspective. Results: In the base-case analysis, VAP strategy (VAPS) was the most effective and BNE strategy (BNES) was the least costly. UNE strategy (UNES) had an incremental cost-effectiveness ratio of €2688/QALY versus BNES and VAPS of €17 250/QALY in comparison with UNES. Surgical management was more effective than medical follow-up with acceptable incremental cost-effectiveness ratios. VAPS became less effective than UNES over 71 years. Differences between UNES and VAPS were sensitive to success and complication rates, quality-of-life weights and procedural costs. Medical follow-up strategies became the most effective if quality-of-life weight for this condition was higher than 0.99. Conclusions: Surgery is more effective than medical follow-up at a reasonable cost and can be preferred except in patients choosing medical follow-up. Minimally invasive surgery is cost-effective compared to the traditional surgical approach.

Economic evaluation of Avonex® (interferon beta-1a) in patients following a single demyelinating event

2005 ◽  
Vol 11 (5) ◽  
pp. 542-551 ◽  
Author(s):  
Michael Iskedjian ◽  
John H Walker ◽  
Trevor Gray ◽  
Colin Vicente ◽  
Thomas R Einarson ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Incremental Cost ◽  
Time Horizon ◽  
Interferon Beta ◽  
Cost Effective ◽  
Current Treatment ◽  
Cost Utility ◽  
Sensitivity Analyses ◽  
Life Years ◽  
Analytical Time

Background: Interferon beta-1a (Avonex®)30 mg, intramuscular (i.m.), once weekly is efficacious in delaying clinically definite multiple sclerosis (CDMS) following a single demyelinating event (SDE). This study determined the cost effectiveness of Avonex® compared to current treatment in delaying the onset of CDMS. Methods: A cost-effectiveness analysis (CEA) and cost-utility analysis (CUA) were performed from Ministry of Health (MoH) and societal perspectives. For CEA, the outcome of interest was time spent in the pre-CDMS state, termed monosymptomatic life years (MLY) gained. For CUA, the outcome was quality-adjusted monosymptomatic life years (QAMLY) gained. A Markov model was developed with transitional probabilities and utilities derived from the literature. Costs were reported in 2002 Canadian dollars. Costs and outcomes were discounted at 5%. The time horizon was 12 years for the CEA, and 15 years for the CUA. All uncertainties were tested via univariate and multivariate sensitivity analyses. Results: In the CEA, the incremental cost of Avonex® per MLY gained was $53 110 and $44 789 from MoH and societal perspectives, respectively. In the CUA, the incremental cost of Avonex® per QAMLY gained was $227 586 and $189 286 from MoH and societal perspectives, respectively. Both models were sensitive to the probability of progressing to CDMS and the analytical time horizon. The CUA was sensitive to the utilities value. Conclusion: Avonex® may be considered as a reasonably cost-effective approach to treatment of patients experiencing an SDE. In addition, the overall incremental cost-effectiveness profile of Avonex® improves if treatment is initiated in pre-CDMS rather than waiting until CDMS.

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