Frequencies for first 10,000 rows of pldel variable in natl1990 dataset :

   Place or |
Facility of |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,949       99.49       99.49
          4 |         45        0.45       99.94
          5 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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