Frequencies for agedeterminationrule variable in busrules2014 dataset :

                 Age Determination Rule |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                        |        411       19.54       19.54
Age on January 1st of the effective d.. |          4        0.19       19.73
                  Age on effective date |      1,686       80.17       99.90
Age on insurance date (age on birthda.. |          2        0.10      100.00
----------------------------------------+-----------------------------------
                                  Total |      2,103      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016