Frequencies for d_4_ipf_c4_200 variable in prds_hosp10_yr2010 dataset :

d_4_ipf_c4_ |
        200 |      Freq.     Percent        Cum.
------------+-----------------------------------
     124385 |          1        0.04        0.04
     135366 |          1        0.04        0.09
     329994 |          1        0.04        0.13
          . |      2,320       99.87      100.00
------------+-----------------------------------
      Total |      2,323      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018