Frequencies for first 10,000 rows of noprovid variable in nhamcsopd2011 dataset :

            No answer to provider item |      Freq.     Percent        Cum.
---------------------------------------+-----------------------------------
One or more provider categories marked |      9,914       99.14       99.14
         No provider categories marked |         86        0.86      100.00
---------------------------------------+-----------------------------------
                                 Total |     10,000      100.00

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