Frequencies for first 10,000 rows of rsprtry_care_srvc_cd variable in pos1994 dataset :

       srv: |
respiratory |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,896       88.96       88.96
          0 |        230        2.30       91.26
          1 |        725        7.25       98.51
          2 |        127        1.27       99.78
          3 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017