The original it is possible to factor in intercourse variations could well be variations in fitness options

Past look had no information on the length of wedding, that could produce a potential choice bias. Design 2, which includes duration of wedding, lets us to sample into the confounding effect of time of marriage. A comparison of the coefficient on the ages pit to your lover inside Design step one and Model 2 means that like the way of measuring matrimony period cannot change the coefficients on the years pit into the mate, suggesting you to definitely time of marriage doesn’t be the cause of brand new death variations of age-discrepant marriages. When you look at the abilities perhaps not revealed here, I checked an extra design one to integrated a communicating anywhere between ages pit into the partner and time of matrimony. Read more