Frequencies for s5_c4_1 variable in prds_hosp10_yr2011 dataset :

    s5_c4_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         12        0.20        0.20
          2 |          1        0.02        0.21
          3 |          5        0.08        0.29
          5 |          2        0.03        0.33
          6 |          1        0.02        0.34
          8 |          2        0.03        0.37
         11 |          2        0.03        0.41
         12 |          1        0.02        0.42
         13 |          2        0.03        0.46
         16 |          1        0.02        0.47
         17 |          1        0.02        0.49
         20 |          2        0.03        0.52
         25 |          3        0.05        0.57
         31 |          1        0.02        0.59
         32 |          1        0.02        0.60
         35 |          2        0.03        0.63
         42 |          1        0.02        0.65
         45 |          1        0.02        0.67
         86 |          1        0.02        0.68
        121 |          1        0.02        0.70
        156 |          1        0.02        0.72
        208 |          1        0.02        0.73
          . |      6,105       99.27      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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