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. 2007 Sep;177(1):587–595. doi: 10.1534/genetics.106.070078

TABLE 4.

Test for age-by-sex interaction

Metric of inbreeding load Covariance structure Effect Num. d.f. Den d.f. F value Pr > F
SID arh(1) Age 1 58.5 162.41 <.0001
Sex 1 54.2 0.02 0.89
Age by sex 1 63.4 1.60 0.21
ID arh(1) Age 1 69.7 92.97 <.0001
Sex 1 58.6 0.17 0.68
Age by sex 1 66.5 4.45 0.04

Num., numerator; Den., denominator.