Summary statistics for ophcpcs0to992004_2014 dataset :

by Jean Roth , jroth@nber.org , 14 Mar 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
    hcpcs_cd |          0
        year |    140,261        2009    3.162289       2004       2014
formatvalu~l |          0
       nrecs |    126,033     61140.1    805001.3          0   4.28e+07
    nppl_any |    125,951    27020.42    263480.1          0   1.30e+07

by Jean Roth , jroth@nber.org , 14 Mar 2018