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

  is physician |
     currently |
 accepting new |
     patients? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |         65        0.65        0.65
           yes |      9,328       93.28       93.93
            no |        555        5.55       99.48
       unknown |         52        0.52      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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