Frequencies for s5_c2_2 variable in prds_hosp10_yr2010 dataset :

    s5_c2_2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |         42        1.81        1.81
          7 |          1        0.04        1.85
          9 |          1        0.04        1.89
          . |      2,279       98.11      100.00
------------+-----------------------------------
      Total |      2,323      100.00

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