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Although recent attention has emphasized the effects of older fathers on ASD risk,
an increase of n years in maternal age has greater implications for ASD risk than a similar increase in paternal age.

an increase of n years in maternal age has greater implications for ASD risk than a similar increase in paternal age.
Although recent attention has emphasized the effects of older fathers on ASD risk,

活字読むの苦手だ

なんか母方の影響が大きいような‥
paternal 父方
maternal 母方