Frequencies for d_4_ipf_c11_9201 variable in prds_hosp10_yr2016 dataset :

d_4_ipf_c11 |
      _9201 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          2        0.03        0.03
          4 |          1        0.02        0.05
         33 |          1        0.02        0.06
          . |      6,178       99.94      100.00
------------+-----------------------------------
      Total |      6,182      100.00

by Jean Roth , jroth@nber.org , 23 Aug 2018