Frequencies for d_4_ipf_c11_56 variable in prds_hosp10_yr2010 dataset :

d_4_ipf_c11 |
        _56 |      Freq.     Percent        Cum.
------------+-----------------------------------
          4 |          1        0.04        0.04
          9 |          1        0.04        0.09
         19 |          1        0.04        0.13
        104 |          1        0.04        0.17
        219 |          1        0.04        0.22
          . |      2,318       99.78      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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