Summary statistics for d4_hos_c2_39 variable in hosp_rollup2552_96_1996 dataset Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d4_hos_c2_39 | 1,979 11555.39 94548.35 -316 2664968 by Jean Roth , jroth@nber.org , 3 Sep 2018