Frequencies for first 10,000 rows of rf_ehype variable in natlterr2014 dataset 

Hypertensio |
n Eclampsia |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,077       10.77       10.77
          N |      8,828       88.28       99.05
          U |         76        0.76       99.81
          Y |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016