[jgtrosh]

But the more you avoid birthday surgeries altogether, the more those that end up still happening are extreme cases with high mortality rates. So if your target is to avoid this scary statistical anomaly, you might instead want to promote more benign surgeries on birthdays.

[mrow84]

The types of surgeries performed should be controlled for when performing a statistical study.

[UncleMeat]

They were. This entire line of criticism comes from not reading the study methods.