Frequencies for first 10,000 rows of prdiag3 variable in namcs2010 dataset :

             for dx3, is this probable, |
              questionable, or ruleout? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   no diagnosis entered |      7,258       72.58       72.58
dx is probable, questionable, or ruleou |         30        0.30       72.88
dx is not probable, questionable, ruleo |      2,712       27.12      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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