To the Editor I have 2 concerns regarding the article by Gallo et al1 evaluating the effectiveness of an electronic health record (EHR)-based early warning score. First, a visual inspection of eFigure 2 in Supplement 2 (the association between the running variable and the primary outcome) does not show an obvious discontinuity in the outcome; it shows how sensitive the outcome result is to the bandwidth selection, with implausibly large effects at small bandwidth sizes, and no significant effect at bandwidth sizes of 9 or above. This is consistent with visual inspection showing that any discontinuity at the threshold is likely driven by unusually extreme values just on either side of the cutoff. The goal of a sensitivity analysis varying the bandwidth size is to show how robust the effect is to such model choices; in this case the robustness of the effect is not supported.