Summary statistics for ther2015q3 dataset :

by Jean Roth , jroth@nber.org , 6 Apr 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    495,824    1.23e+08    9.63e+07   3.65e+07   1.15e+09
      caseid |    495,824    1.12e+07    581174.7    3645062   1.16e+07
dsg_drug_seq |    495,824    4.589772    8.185072          1        184
    start_dt |    473,202    1.37e+07     9345346       1933   2.10e+07
start_dt_num |    473,202    19159.51    1990.186    -347599      52542
-------------+---------------------------------------------------------
      end_dt |    195,128    1.44e+07     9031362       1920   2.10e+07
  end_dt_num |    195,128    19594.43    1312.703    -345052      90260
         dur |        957    39.06844    254.1847         .5       3650
      durstr |          0
     dur_cod |          0

by Jean Roth , jroth@nber.org , 6 Apr 2017