Frequencies for first 10,000 rows of nocap variable in namcs2006 dataset :

       for new |
     patients, |
     physician |
      accepts: |
 non-capitated |
       private |
     insurance |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        321        3.21        3.21
           yes |      8,245       82.45       85.66
            no |        424        4.24       89.90
       unknown |        403        4.03       93.93
not applicable |        607        6.07      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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