Frequencies for agedeterminationrule variable in busrules2018 dataset :

                 Age Determination Rule |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Age on January 1st of the effective d.. |         14        0.33        0.33
                  Age on effective date |      4,275       99.58       99.91
Age on insurance date (age on birthda.. |          4        0.09      100.00
----------------------------------------+-----------------------------------
                                  Total |      4,293      100.00

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