If I'm reading Table 1 of the FIRST study correctly, the comparison is between doctors working up to 28 continuous hours with those working more than that. The

If I'm reading Table 1 of the FIRST study correctly, the comparison is between doctors working up to 28 continuous hours with those working more than that. The 28 hour mark seems so far beyond the "starting to get sloppy" threshold that I'm not surprised there weren't major differences. By contrast, pilots are typically allowed to work for 9-13 hours in a row, and a bit longer with extra support/breaks.