Frequencies for first 10,000 rows of pldel variable in natl1994 dataset :

   Place or |
Facility of |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,978       99.78       99.78
          3 |          1        0.01       99.79
          4 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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