Frequencies for first 10,000 rows of ab_anti variable in natl2016 dataset :

Antibiotics |
for Newborn |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
          N |      9,680       96.80       96.80
          U |         38        0.38       97.18
          Y |        282        2.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Oct 2017