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 , 22 Oct 2016