O. (2016). Gabapentin for postoperative pain management-a systematic review with meta-analyses and trial sequential analyses. This article included Trial Sequential Analyses (TSA) of the random-effects models used to adjust the confidence intervals (CI) for possible sparse data and repetitive testing. Unfortunately, due to a bug in the TSA program, the required information size (RIS) for continuous outcomes were calculated twice the correct value. There was no error in the calculations of RIS for dichotomous outcomes. However, even with an upgrade of the GRADE evaluation of the effect on the co-primary outcome of 24 hrs morphine consumption from 'very low' to 'low' the conclusions still hold and should not be changed. Accordingly, the authors present corrections for the following passages in the article: In the Abstract, Results section: