Frequencies for first 10,000 rows of prov2190 variable in pos2001 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,837       88.37       88.37
          0 |        396        3.96       92.33
          1 |        718        7.18       99.51
          2 |         33        0.33       99.84
          3 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016