Frequencies for agedeterminationrule variable in busrules2015 dataset :

                 Age Determination Rule |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
Age on January 1st of the effective d.. |         14        0.14        0.14
                  Age on effective date |     10,029       99.35       99.48
Age on insurance date (age on birthda.. |         52        0.52      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,095      100.00

by Jean Roth , jroth@nber.org , 9 Dec 2017