Frequencies for d3_irf_c2_40 variable in prds_hosp10_yr2011 dataset :

d3_irf_c2_4 |
          0 |      Freq.     Percent        Cum.
------------+-----------------------------------
         17 |          1        0.02        0.02
         63 |          1        0.02        0.03
         66 |          1        0.02        0.05
        330 |          1        0.02        0.07
        494 |          1        0.02        0.08
        659 |          1        0.02        0.10
       3932 |          1        0.02        0.11
       4741 |          1        0.02        0.13
          . |      6,142       99.87      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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