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

   Expected source of payment |
 for visit: No answer to item |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
One or more categories marked |      9,946       99.46       99.46
         No categories marked |         54        0.54      100.00
------------------------------+-----------------------------------
                        Total |     10,000      100.00

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