Frequencies for first 10,000 rows of otherlb variable in natl1997 dataset :

      Other |
complicatio |
 n of Labor |
     and/or |
   Delivery |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,572       15.72       15.72
          2 |      8,421       84.21       99.93
          9 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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