Frequencies for first 10,000 rows of prdiag2 variable in nhamcsopd2010 dataset :

             for dx2, is this probable, |
              questionable, or ruleout? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                   no diagnosis entered |      4,798       47.98       47.98
dx is not probable, questionable, ruleo |      5,126       51.26       99.24
dx is probable, questionable, or ruleou |         76        0.76      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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