Frequencies for first 10,000 rows of labres3 variable in namcs2013 dataset :

Share lab results |
   electronically |
  (not fax) with: |
   hospitals with |
 which you are no |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      6,235       62.35       62.35
Box is not marked |      3,235       32.35       94.70
    Box is marked |        530        5.30      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017