Frequencies for d4_snf_c2_66 variable in hosp_rollup2552_96_2006 dataset :

d4_snf_c2_6 |
          6 |      Freq.     Percent        Cum.
------------+-----------------------------------
       1220 |          1        0.02        0.02
      29771 |          1        0.02        0.03
          . |      6,190       99.97      100.00
------------+-----------------------------------
      Total |      6,192      100.00

by Jean Roth , jroth@nber.org , 21 Apr 2018