Frequencies for first 10,000 rows of precare5 variable in natl2014 dataset :

      Month |
   Prenatal |
 Care Began |
   Recode 1 |
 1st to 3rd |
      month |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,911       69.11       69.11
          2 |      1,930       19.30       88.41
          3 |        545        5.45       93.86
          4 |         81        0.81       94.67
          5 |        533        5.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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