Frequencies for first 10,000 rows of cert_no variable in person dataset :

       Death |
 Certificate |
      Number |      Freq.     Percent        Cum.
-------------+-----------------------------------
************ |     10,000      100.00      100.00
-------------+-----------------------------------
       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016