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

   Mother's |
Birth State |
 Recode U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      8,912       89.12       89.12
          2 |      1,003       10.03       99.15
          3 |         85        0.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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