Frequencies for ftnt_id variable in vwhqi_hosp_spp dataset :

    ftnt_id |      Freq.     Percent        Cum.
------------+-----------------------------------
         16 |         64        1.93        1.93
          . |      3,260       98.07      100.00
------------+-----------------------------------
      Total |      3,324      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016