Frequencies for d_4_irf_c11_57 variable in prds_hosp10_yr2013 dataset :

d_4_irf_c11 |
        _57 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          4        0.06        0.06
          3 |          1        0.02        0.08
          4 |          3        0.05        0.13
          5 |          2        0.03        0.16
          6 |          1        0.02        0.18
          7 |          1        0.02        0.19
          8 |          1        0.02        0.21
          9 |          2        0.03        0.24
         10 |          1        0.02        0.26
         12 |          1        0.02        0.27
         13 |          1        0.02        0.29
         15 |          1        0.02        0.30
         17 |          1        0.02        0.32
         20 |          1        0.02        0.34
         29 |          1        0.02        0.35
         37 |          1        0.02        0.37
         38 |          1        0.02        0.38
         42 |          1        0.02        0.40
         57 |          1        0.02        0.42
         65 |          1        0.02        0.43
         80 |          1        0.02        0.45
        277 |          1        0.02        0.46
          . |      6,219       99.54      100.00
------------+-----------------------------------
      Total |      6,248      100.00

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