Frequencies for agedeterminationrule variable in busrules2017 dataset :

                 Age Determination Rule |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Age on January 1st of the effective d.. |         16        0.24        0.24
                  Age on effective date |      6,600       99.70       99.94
Age on insurance date (age on birthda.. |          4        0.06      100.00
----------------------------------------+-----------------------------------
                                  Total |      6,620      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017