CD38 is associated with bonding-relevant cognitions and relationship satisfaction over the first 3 years of marriage.

However, re-centering the time variable such that the intercept represented the end of the study revealed that CC individuals were more satisfied than AC/AA individuals at the end of the study, although this association did not quite reach significance, b = − 0.35, SE = 0.19, t (64) = − 1.86, p = 0.068, perhaps due to increased error variance, due to attrition and other factors.

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