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February 16, 2009

Calculation Error in: The Cost of Juvenile-Onset Recurrent Respiratory Papillomatosis

Arch Otolaryngol Head Neck Surg. 2009;135(2):208. doi:10.1001/archoto.2008.528

Calculation Error. In the article titled “The Cost of Juvenile-Onset Recurrent Respiratory Papillomatosis,” by Bishai et al, published in the August 2000 issue of the Archives (2000;126[8]:935-939), an error in the spreadsheet used to calculate the costs of juvenile onset respiratory papillomatosis (JORRP) produced an incorrect estimate of cost and discounted quality-adjusted life-years (QALYs) in the “Results” subsection of the “Abstract” and the first 2 paragraphs of the “Results” section on page 935. The corrected paragraphs should read as follows:

“Annual costs incurred by a statistical case of JORRP are estimated to be $29 946. Setting all parameters at their extreme values, the range for this estimate is $19 101 to $43 267. The present value of the lifetime costs are estimated at $104 159 in the baseline estimate with extreme values of $43 267 to $218 067. Based on the estimated prevalence, the annual medical costs of JORRP in the United States are estimated at $42 to $67 million.

We estimate the burden of lost QALYs at 0.31 per year of disease. Setting all parameters at their extreme values, the range for this estimate is 0.10 to 0.96 QALYs lost per year of JORRP. The estimated number of discounted lifetime QALYs lost due to a single case of JORRP is 1.21 with an extreme range of 0.26 to 4.89 QALYs.”

We gratefully acknowledge Harrell Chesson, PhD, in calling these errors to our attention.