The authors have reported a number of corrections to their analysis following the Letter to the Editor by Diamantopoulos et al. [1] These corrections have not affected the conclusions of the article but have resulted in a number of changes to the cost and utility results presented throughout the text, figures and tables. In addition, a wider range of utility values were tested in the one-way sensitivity analyses as the corrections resulted in a wider variance than previously reported. Please refer to Bounthavong et al.'s reply [2] to Diamantopoulos et al. for a more comprehensive explanation of these errors and to the online corrected version for correct cost and utility results.