Frequencies for first 10,000 rows of mpcb variable in natlterr2005 dataset :

      Month |
   Prenatal |
 Care Began |
        RFP |
669=f_mpcb_ |
        u U |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        258        2.58        2.58
          1 |        538        5.38        7.96
          2 |        993        9.93       17.89
          3 |        866        8.66       26.55
          4 |        550        5.50       32.05
          5 |        523        5.23       37.28
          6 |        315        3.15       40.43
          7 |        219        2.19       42.62
          8 |        145        1.45       44.07
          9 |         85        0.85       44.92
         99 |      1,763       17.63       62.55
          . |      3,745       37.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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