Frequencies for first 10,000 rows of hlt_mammogrm variable in mcbsatc2013 datas

Mammogram/b |
reast X-ray |
within last |
      4 yrs |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,325       33.25       33.25
          2 |      2,060       20.60       53.85
          . |      4,615       46.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 24 May 2016