Frequencies for first 10,000 rows of mpcb_rec6 variable in natl2003 dataset :

      Month |
   Prenatal |
 Care Began |
 Recode 6 U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,460       54.60       54.60
          2 |      2,077       20.77       75.37
          3 |      1,416       14.16       89.53
          4 |        458        4.58       94.11
          5 |         35        0.35       94.46
          6 |        554        5.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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