Summary statistics for pspp2015_90 dataset :

by Jean Roth , jroth@nber.org , 11 Feb 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        npi1 |          0
        npi2 |          0
   paircount | 56,040,265    183.4884    673.3822         11     444214
   benecount | 56,040,265    37.54565     84.4159         11      52994
samedaycount | 56,040,265     11.7884    96.42275          0     125761
-------------+---------------------------------------------------------
        year | 56,040,265        2015           0       2015       2015
        days | 56,040,265          90           0         90         90
     begdate | 56,040,265       20089           0      20089      20089
     enddate | 56,040,265       20362           0      20362      20362

by Jean Roth , jroth@nber.org , 11 Feb 2018