Frequencies for first 10,000 rows of prov2070 variable in pos2010 dataset :

       SRV: |
 ANESTHESIA |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |        452        4.52       90.78
          1 |        374        3.74       94.52
          2 |        471        4.71       99.23
          3 |         77        0.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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