Frequencies for first 10,000 rows of urf_other variable in natl2004 dataset :

      Other |
    Medical |
       Risk |
  Factors U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,398       23.98       23.98
          2 |      6,621       66.21       90.19
          9 |        981        9.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016