Frequencies for s3_1_c5_10 variable in prds_hosp10_yr2012 dataset :

 s3_1_c5_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.02        0.02
          4 |          1        0.02        0.03
          8 |          1        0.02        0.05
          9 |          1        0.02        0.06
         51 |          1        0.02        0.08
          . |      6,222       99.92      100.00
------------+-----------------------------------
      Total |      6,227      100.00

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