In the following article the authors have discovered a data error and provided the following correction:
Our study included a cost analysis for TOT versus TVT with data up to 1 year postoperatively. During our ongoing 5 year follow-up study, we discovered a data error in the original administrative data provided to us. The labels of two data fields for inpatient admissions were switched in the original data file, which we did not notice since the values were plausible. The error affected only inpatient costs. Using corrected data we have recalculated the incremental cost for year 1. For complete cases (n = 119) the incremental cost was reported as −$1242 whereas the corrected data indicate a much lower amount of −$242. For the main analysis (n = 194) the original estimate was reported as −$1133, while the revised incremental cost is −$516. The cost-effectiveness acceptability curves (original and revised figures attached) are also affected. The revised acceptability curve for the base case declines more steeply than the original but generally indicates that TOT is cost-effective over plausible levels of willingness-to-pay. The revised acceptability curve for the complete case analysis is generally less favorable to TOT than the original. The revised estimates continue to indicate non-significant cost savings associated with TOT (as originally published in our paper).
The original and revised figure is reproduced below.
Original Figure 4. Cost-effectiveness acceptability curve (CEAC)
Revised cost-effectiveness acceptability curve (CEAC)