Frequencies for first 10,000 rows of diagscrn variable in nhamcsed2013 dataset :

    Were diagnostic services ordered or |
                              provided? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                     No |      3,018       30.18       30.18
                                    Yes |      6,902       69.02       99.20
Entire item blank, including 'None' box |         80        0.80      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016