Summary statistics for pspp2011_60 dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        npi1 |          0
        npi2 |          0
   paircount | 73,545,008    197.0147    732.6331         11     558378
   benecount | 73,545,008    42.33864     100.823         11      80139
samedaycount | 73,545,008    14.73626    119.8012          0     142330
-------------+---------------------------------------------------------
        year | 73,545,008        2011           0       2011       2011
        days | 73,545,008          60           0         60         60
     begdate | 73,545,008       18628           0      18628      18628
     enddate | 73,545,008       19053           0      19053      19053

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