Objectives: To assess the cost-effectiveness of addition of olanzapine to a prophylactic antiemetic regimen containing aprepitant, dexamethasone and ondansetron among children receiving highly emetogenic chemotherapy (HEC) in India, Bangladesh, Indonesia, the UK and the USA.
Methods: Health states were estimated using individual patient-level outcome data from a randomised trial. The incremental cost-utility ratio (ICUR), incremental cost-effectiveness ratio and net monetary benefit (NMB) were calculated from the patient perspective for India, Bangladesh, Indonesia, the UK and the USA. One-way sensitivity analysis was done by varying the cost of olanzapine, cost of hospitalisation and utility values by ±25%.
Results: The olanzapine arm had an increment of 0.0018 quality-adjusted life-years (QALY) over the control arm. The mean total expenditure in the olanzapine arm was greater by US$0.51, US$0.43, US$6.73, US$11.05 and US$12.35 in India, Bangladesh, Indonesia, the UK and the USA, respectively. The ICUR($/QALY) was US$282.60 in India, US$241.42 in Bangladesh, US$3755.93 in Indonesia, US$6161.83 in the UK and US$6887.41 in the USA. The NMB was US$9.86, US$10.12, US$14.08, US$44.74 and US$98.79 for India, Bangladesh, Indonesia, the UK and the USA, respectively. The ICUR estimates of the base case and sensitivity analysis were below the willingness-to-pay threshold in all scenarios.
Conclusion: The addition of olanzapine as a fourth agent for antiemetic prophylaxis is cost-effective despite an increase in overall expenditure. Olanzapine should be uniformly considered for children receiving HEC.
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| http://dx.doi.org/10.1136/spcare-2022-004069 | DOI Listing |
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