Summary statistics for d4_hos_18_c2_03540 variable in hcris2552_96_2009 dataset Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- d4_hos_18~40 | 13 1284564 3120923 2090 1.07e+07 by Jean Roth , jroth@nber.org , 31 Aug 2018