Frequencies for first 10,000 rows of udmeth_rec variable in natl2008 dataset :

   Delivery |
     Method |
     Recode |
(Unrevised) |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,583       65.83       65.83
          2 |         54        0.54       66.37
          3 |      1,949       19.49       85.86
          4 |      1,359       13.59       99.45
          9 |         55        0.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016