Frequencies for first 10,000 rows of udmeth_rec variable in natl2007 dataset :

   Delivery |
     Method |
     Recode |
(Unrevised) |
          U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,565       75.65       75.65
          2 |        160        1.60       77.25
          3 |      1,552       15.52       92.77
          4 |        664        6.64       99.41
          9 |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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