Frequencies for first 10,000 rows of no_mmorb variable in natl2014 dataset :

No Maternal |
  Morbidity |
 Reported 1 |
       True |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        261        2.61        2.61
          1 |      9,555       95.55       98.16
          9 |        184        1.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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