Summary statistics for g_c1thr4_4 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- g_c1thr4_4 | 6,090 3.49e+07 6.84e+07 -1.62e+07 1.41e+09 by Jean Roth , jroth@nber.org , 21 Apr 2018