The authors of an article published in the April 2020 issue, “Subomohyoid Anterior Suprascapular Block versus Interscalene Block for Arthroscopic Shoulder Surgery: A Multicenter Randomized Trial,”1 note two errors in their published article and present below the relevant corrections.
The description of the area under the curve in the “Sample Size” section expresses this outcome as “units per measurement” and “units/24-hr interval.” This description can be misleading, as multiplication (and not division) is usually used to express this outcome. To avoid any ambiguity, the authors have modified the reporting in this section to “units for each measurement” and “units during a 24-h interval.” “U/24-h interval” has also been corrected to “units during 24-h interval” in the first row of table 2.
To estimate the area under the curve, the authors used the “trapezoid rule,” and not the “trapezoid role” as incorrectly described in the penultimate paragraph of the “Statistical Analysis” section on page 844.
The authors regret and apologize for these errors. The online version and PDF of the article have been corrected.