Frequencies for first 10,000 rows of op_rehab_srvc_cd variable in pos2009 dataset :

 SRV: REHAB |
          - |
 OUTPATIENT |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,638       86.38       86.38
          0 |      1,185       11.85       98.23
          1 |        131        1.31       99.54
          2 |         35        0.35       99.89
          3 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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