Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/47479
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Type: Journal article
Title: Cost utility analysis of early adjuvant letrozole or anastrozole versus tamoxifen in postmenopausal women with early invasive breast cancer: the UK perspective
Author: Karnon, J.
Delea, T.
Barghout, V.
Citation: European Journal of Health Economics, 2008; 9(2):171-183
Publisher: Springer
Issue Date: 2008
ISSN: 1618-7598
1618-7601
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Responsibility: 
Jonathan Karnon, Thomas Delea and Vicki Barghout
Abstract: Five years with the aromatase inhibitors letrozole or anastrozole is clinically superior to 5 years tamoxifen in postmenopausal women with early breast cancer. This paper analyses the cost-effectiveness of the aromatase inhibitors compared to tamoxifen using the same health economic model. A Markov model describes lifetime incidence of breast cancer events and treatment-related adverse events. Probabilities of disease progression, adverse events, and utility values were estimated using secondary sources; costs of breast-cancer care were obtained from a primary costing study. The incremental cost per QALY gained of letrozole vs. tamoxifen is £10,379 (95% CI £6,705–23,574), and of anastrozole versus tamoxifen is £11,428 (95% CI £6,211–48,795). If a 5-year carry over effect for the reduction in breast cancer events is assumed, the incremental costs per QALY gained compared to tamoxifen are £6,253 (95% CI £3,675–14,766) for letrozole and £7,015 (95% CI £3,316–31,997) for anastrozole. Five years of letrozole or anastrozole therapy is cost-effective in postmenopausal women with early breast cancer. Though the respective confidence intervals show significant overlap, letrozole has a 95% probability of being more cost-effective than tamoxifen at a £20,000 QALY value, whilst anastrozole has an 85% probability.
Keywords: Early breast cancer; Cost effectiveness; Letrozole; Anastrozole; Adjuvant therapy
Description: The original publication can be found at www.springerlink.com
Provenance: Published online: 30 June 2007
RMID: 0020082297
DOI: 10.1007/s10198-007-0058-1
Published version: http://www.springerlink.com/content/m8g5508p62565361/
Appears in Collections:Public Health publications

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