Frequencies for first 10,000 rows of eshareunk variable in namcs2012 dataset :

How does practice |
   electronically |
    share patient |
           health |
     information: |
          unknown |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      6,561       65.61       65.61
Box is not marked |      3,425       34.25       99.86
    Box is marked |         14        0.14      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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