Summary statistics for d_4_hos_c6_55 variable in hosp_rollup2552_96_1998 datase Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d_4_hos_c6~5 | 18 1.05e+07 9679510 301426 2.95e+07 by Jean Roth , jroth@nber.org , 6 Sep 2018