Rule 2. Gender-blended tables with 10-year select mortality factors, as defined in R 500.1221(2), may be derived by applying select factors to gender-blended tables without select factors where the select factors are derived by using the following formula:
zFT/t = (Z)Fm/t + .6(1-Z)Ff/t Z + .6(1-Z)
where
zFT/t is the gender-blended select factor for year t Fm/t is the male select factor for year t Ff/t is the female select factor for year t Z is the ratio of mail lives to the total lives at the pivotal age
Mich. Admin. Code R. 500.1222