Frequencies for first 10,000 rows of ostprsis variable in nhamcsopd2006 dataset :

       does |
patient now |
     have - |
osteoporosi |
          s |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,861       98.61       98.61
        Yes |        139        1.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016