Frequencies for b_2_c27_28 variable in hosp_rollup2552_96_2010 dataset :

 b_2_c27_28 |      Freq.     Percent        Cum.
------------+-----------------------------------
       4480 |          1        0.02        0.02
      33154 |          1        0.02        0.05
      39970 |          1        0.02        0.07
      40937 |          1        0.02        0.10
          . |      4,001       99.90      100.00
------------+-----------------------------------
      Total |      4,005      100.00

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