Frequencies for first 10,000 rows of otherab variable in linkco1991us_num dataset :

      Other |
   Abnormal |
 Conditions |
     of the |
    Newborn |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,990       19.90       19.90
          2 |      6,868       68.68       88.58
          9 |      1,142       11.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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