Frequencies for first 10,000 rows of OP_SRVC_CD variable in pos2011 dataset :

   Services |
  Provided: |
 Outpatient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |        315        3.15       89.29
          1 |        952        9.52       98.81
          2 |         38        0.38       99.19
          3 |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Apr 2019