Frequencies for first 10,000 rows of urf_other variable in natl2005 dataset :

      Other |
    Medical |
       Risk |
  Factors U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,628       26.28       26.28
          2 |      7,249       72.49       98.77
          9 |        123        1.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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