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

How does practice |
   electronically |
    share patient |
           health |
     information: |
          unknown |      Freq.     Percent        Cum.
------------------+-----------------------------------
Entire item blank |         15        0.15        0.15
   Not applicable |      6,235       62.35       62.50
Box is not marked |      3,750       37.50      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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