Summary statistics for pspp2013_30 dataset :

by Jean Roth , jroth@nber.org , 12 Feb 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        npi1 |          0
        npi2 |          0
   paircount | 55,141,669    145.9087    498.1172         11     277825
   benecount | 55,141,669    41.05655    96.06234         11      84295
samedaycount | 55,141,669    18.06049    147.4592          0     262800
-------------+---------------------------------------------------------
        year | 55,141,669        2013           0       2013       2013
        days | 55,141,669          30           0         30         30
     begdate | 55,141,669       19359           0      19359      19359
     enddate | 55,141,669       19755           0      19755      19755

by Jean Roth , jroth@nber.org , 12 Feb 2018