Frequencies for d_4_ipf_c11_55 variable in prds_hosp10_yr2011 dataset :

d_4_ipf_c11 |
        _55 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          2        0.03        0.03
         11 |          3        0.05        0.08
         17 |          1        0.02        0.10
         18 |          1        0.02        0.11
         27 |          1        0.02        0.13
         42 |          1        0.02        0.15
          . |      6,141       99.85      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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