Frequencies for first 10,000 rows of prdiag1 variable in namcs2011 dataset :

             For dx1, is this probable, |
              questionable, or ruleout? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   No diagnosis entered |        127        1.27        1.27
Dx is probable, questionable, or ruleou |         54        0.54        1.81
Dx is not probable, questionable, ruleo |      9,819       98.19      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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