Summary statistics for l_1_hos_c1_9 variable in prds_hosp10_yr2011 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- l_1_hos_c1_9 | 1,836 .3174012 .1894567 .0006 1.165 by Jean Roth , jroth@nber.org , 24 Aug 2018