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Table 1 Generalized linear mixed model investigating variation in female mate preferences.

From: Female house sparrows "count on" male genes: experimental evidence for MHC-dependent mate preference in birds

Factors d.f. F P
Female group 2, 130 0.450 0.639
Stimulus group 2, 130 2.108 0.126
Male wing length 1, 130 0.012 0.915
Male tarsus length 1, 130 0.227 0.635
Male body mass 1, 130 0.042 0.838
Male badge size 1, 130 0.274 0.601
Stimulus individual heterozygosity 1, 130 0.040 0.842
Female group × Stimulus group 4, 130 3.824 0.006
Female group × Stimulus individual heterozygosity 2, 130 0.121 0.886
Female group × Male badge size 2, 130 0.489 0.614
  1. Fixed effects were female group (High, Intermediate and Low number of MHC alleles) and stimulus group (Males with High, Intermediate, Low number of alleles, and the control group). Male wing length, tarsus length, body mass, badge size and heterozygosity were entered into the model as covariates. We fitted the female individual identity as a random factor (F 1,130 = 0.031, P = 0.86) to control for the non-independence of the data. Significant F and P-values are shown in bold.