Frequencies for first 10,000 rows of meconium variable in natl1991 dataset :

 Meconium - |
moderate/he |
        avy |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        415        4.15        4.15
          2 |      9,555       95.55       99.70
          9 |         30        0.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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