Frequencies for d4_sub1_c2_56 variable in hosp_rollup2552_96_2011 dataset :

d4_sub1_c2_ |
         56 |      Freq.     Percent        Cum.
------------+-----------------------------------
     114734 |          1        3.45        3.45
     281928 |          1        3.45        6.90
     527321 |          2        6.90       13.79
     753958 |          1        3.45       17.24
          . |         24       82.76      100.00
------------+-----------------------------------
      Total |         29      100.00

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