Frequencies for first 10,000 rows of op_srvc_cd variable in pos2005 dataset :

       srv: |
 outpatient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |        261        2.61       89.92
          1 |        913        9.13       99.05
          2 |         32        0.32       99.37
          3 |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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