Frequencies for a_c1_69 variable in hosp_rollup2552_96_2009 dataset :

    a_c1_69 |      Freq.     Percent        Cum.
------------+-----------------------------------
     303539 |          1        0.02        0.02
     475238 |          2        0.03        0.05
     536670 |          1        0.02        0.06
     541947 |          1        0.02        0.08
     722970 |          1        0.02        0.09
          . |      6,354       99.91      100.00
------------+-----------------------------------
      Total |      6,360      100.00

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