Frequencies for s3_1_c2_18 variable in prds_hosp10_yr2011 dataset :

 s3_1_c2_18 |      Freq.     Percent        Cum.
------------+-----------------------------------
         12 |          1        0.02        0.02
         14 |          1        0.02        0.03
         15 |          1        0.02        0.05
         18 |          1        0.02        0.07
         24 |          1        0.02        0.08
         38 |          2        0.03        0.11
         40 |          1        0.02        0.13
         67 |          1        0.02        0.15
         68 |          1        0.02        0.16
        102 |          1        0.02        0.18
        108 |          1        0.02        0.20
        141 |          1        0.02        0.21
        222 |          1        0.02        0.23
        254 |          1        0.02        0.24
          . |      6,135       99.76      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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