Frequencies for ins_copd_cvd_cad variable in hcccoefn dataset :

ins_copd_cv |
      d_cad |      Freq.     Percent        Cum.
------------+-----------------------------------
       .071 |          1      100.00      100.00
------------+-----------------------------------
      Total |          1      100.00

by Jean Roth , jroth@nber.org , 2 May 2016