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

  Reporting |
   Flag for |
      Month |
   Prenatal |
 Care Began |
          0 |
Non-Reporti |
         ng |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |      9,999       99.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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