Summary statistics for 2007_surg_discharges_hrr dataset : by Jean Roth , jroth@nber.org , 14 Mar 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- hrrnumber | 307 251.0912 131.2625 1 999 hrrlabel | 0 medicar~2007 | 307 182271.4 1593836 15906 2.80e+07 allsurgica~i | 307 100.9338 11.78989 42.83311 134.9344 abdominala~r | 306 .8030908 .7036155 -1.601748 1.762062 -------------+--------------------------------------------------------- backsurger~l | 307 4.772377 1.482352 1.643449 9.300398 coronaryan~a | 307 19.24505 5.45799 6.284835 39.76361 coronaryar~g | 307 3.990141 1.127366 1.468182 8.851999 percutaneo~n | 307 10.25453 3.620678 2.979038 26.83824 carotidend~i | 307 2.4628 .857313 .3783633 5.884333 -------------+--------------------------------------------------------- cholecyste~n | 307 3.85504 .8151162 1.862596 6.421995 hospitaliz~r | 307 7.41238 1.068827 2.962142 10.48571 hipreplace~r | 307 3.447883 .8806694 1.037071 6.634185 kneereplac~n | 307 8.997153 1.756454 2.909816 15.10763 mastect~1000 | 287 .2985293 1.0883 -2.30907 1.946892 -------------+--------------------------------------------------------- resectionf~e | 307 1.478458 .4406418 -2.389876 2.355799 lowerextre~p | 298 .793136 .7014024 -1.840541 2.622831 transureth~n | 304 3.434095 1.58315 -5.68201 9.561217 radicalpro~m | 291 .7882244 1.629339 -3.714517 3.667363 aorticmitr~1 | 307 1.277953 .6050125 -2.014047 2.336799 by Jean Roth , jroth@nber.org , 14 Mar 2018