Frequencies for first 10,000 rows of precare_rec variable in natlterr2007 dataset :

      Month |
   Prenatal |
 Care Began |
 Recode RFP |
 668=f_mpcb |
          R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,766       27.66       27.66
          2 |        920        9.20       36.86
          3 |        112        1.12       37.98
          4 |         13        0.13       38.11
          5 |         26        0.26       38.37
          . |      6,163       61.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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