Frequencies for first 10,000 rows of pccprod variable in namcs2007 dataset :

for patient |
       care |
compensatio |
      n, is |
  physician |
productivit |
    y taken |
       into |
   account? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |         16        0.16        0.16
    unknown |      1,577       15.77       15.93
        yes |      4,040       40.40       56.33
         no |      4,367       43.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016