Frequencies for first 10,000 rows of prdiag1 variable in namcs2007 dataset :

             for dx1, is this probable, |
              questionable, or ruleout? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   no diagnosis entered |         79        0.79        0.79
dx is probable, questionable, or ruleou |        106        1.06        1.85
dx is not probable, questionable, ruleo |      9,815       98.15      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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