Frequencies for d_4_snf_c11_90 variable in prds_hosp10_yr2011 dataset :

d_4_snf_c11 |
        _90 |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |          2        0.03        0.03
          4 |          1        0.02        0.05
          9 |          1        0.02        0.07
         80 |          1        0.02        0.08
          . |      6,145       99.92      100.00
------------+-----------------------------------
      Total |      6,150      100.00

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