Frequencies for first 10,000 rows of isreferralrequiredforspecialist variable in plan2016 dataset :

       Is a |
   Referral |
   Required |
        for |
Specialist? |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,826       18.26       18.26
         No |      6,352       63.52       81.78
        Yes |      1,822       18.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016