Frequencies for first 10,000 rows of nselfpay variable in namcs2004 dataset :

    for new |
  patients, |
       phys |
   accepts: |
   self-pay |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        283        2.83        2.83
          1 |      9,469       94.69       97.52
          2 |        175        1.75       99.27
          3 |         73        0.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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