Summary statistics for 1996_surg_discharges_hsa dataset : by Jean Roth , jroth@nber.org , 14 Mar 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- hsanumber | 3,437 26325.03 14845.04 1001 99999 hsalabel | 0 medicar~1996 | 3,437 16346.8 479265.3 71 2.81e+07 allsurgica~i | 3,399 96.81757 12.58636 53.30695 179.2222 backsurger~l | 762 2.874095 1.074368 .6881539 7.871212 -------------+--------------------------------------------------------- coronaryan~a | 2,737 18.64392 6.070069 5.292571 52.71385 coronaryar~g | 1,630 6.452917 1.656699 2.59047 13.8869 percutaneo~n | 1,581 6.946617 2.865487 1.885315 25.67941 carotidend~i | 928 3.532847 1.279049 .9250733 8.246687 cholecyste~n | 1,312 4.950851 1.326224 1.900611 11.18302 -------------+--------------------------------------------------------- hospitaliz~r | 1,905 8.286033 1.427021 3.520692 13.33205 hipreplace~r | 674 2.469608 .6736477 .6609667 4.659769 kneereplac~n | 1,344 5.192099 1.543019 1.393414 13.00176 mastect~1000 | 215 1.707822 .4889083 .6625819 3.440343 resectionf~e | 501 1.946167 .3615594 .9732394 3.446888 -------------+--------------------------------------------------------- lowerextre~p | 447 1.932984 .636604 .579555 5.108355 transureth~n | 959 8.424213 3.119154 2.052723 25.55379 aorticmitr~1 | 269 1.256503 .3277321 .5578631 2.518789 by Jean Roth , jroth@nber.org , 14 Mar 2018