Frequencies for first 10,000 rows of rsprtry_care_srvc_cd variable in pos2007 dataset :

       srv: |
respiratory |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,554       85.54       85.54
          0 |        344        3.44       88.98
          1 |        928        9.28       98.26
          2 |        138        1.38       99.64
          3 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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