Number of hospitals shifting rank and direction of shift when comparing the ranks obtained by mortality measures S30D and IH30D versus W30D per medical condition. Shifts are categorized as none, minor (1–5 shifts), moderate (6–10 shifts), and major (>10 shifts). The top bar on every plot shows the number of hospitals with no shift in rank. The empty bars to the right of the vertical axis show the number of hospitals shifting to better rank (lower mortality) when compared to W30D. The filled bars to the left of the vertical axis show the number of hospitals shifting to lower rank (higher mortality) when compared to W30D.