Frequencies for first 10,000 rows of mpcb_rec5 variable in natlterr2003 dataset :

      Month |
   Prenatal |
 Care Began |
 Recode 5 U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,150       81.50       81.50
          2 |      1,542       15.42       96.92
          3 |        220        2.20       99.12
          4 |         71        0.71       99.83
          5 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015