Frequencies for d4_sub1_c2_51 variable in hosp_rollup2552_96_2011 dataset :

d4_sub1_c2_ |
         51 |      Freq.     Percent        Cum.
------------+-----------------------------------
       4003 |          1        3.45        3.45
      28940 |          2        6.90       10.34
     510365 |          1        3.45       13.79
          . |         25       86.21      100.00
------------+-----------------------------------
      Total |         29      100.00

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