Frequencies for first 10,000 rows of ip_gon variable in natl2017 dataset :

Gonorrhea Y |
        Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      9,860       98.60       98.60
          U |        107        1.07       99.67
          Y |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 19 Sep 2018