Summary statistics for a_c6_98 variable in hosp_rollup2552_96_2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_98 | 362 -999746 5051518 -4.44e+07 3.75e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018