Frequencies for first 10,000 rows of prdiag3 variable in namcs2011 dataset :

             For dx3, is this probable, |
              questionable, or ruleout? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   No diagnosis entered |      7,141       71.41       71.41
Dx is probable, questionable, or ruleou |         31        0.31       71.72
Dx is not probable, questionable, ruleo |      2,828       28.28      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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