Frequencies for first 10,000 rows of prdiag3 variable in namcs2014 dataset :

 Is diagnosis #3 probable, questionable |
                           or rule out? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   No diagnosis entered |      5,891       58.91       58.91
Dx is probable, questionable, or ruleou |         26        0.26       59.17
Dx is not probable, questionable, ruleo |      4,083       40.83      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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