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. 2016 Apr 13;283(1828):20160114. doi: 10.1098/rspb.2016.0114

Table 2.

Model analyses of group-size effect on social foraging behaviour of the subsocial crab spider Australomisidia ergandros. (We tested for significant differences in different feeding parameters (table 1) between three group-size treatments: small with five to six individuals, medium with 9–10 individuals and large with 13–14 individuals.)

response analysisa test statistic p-valueb
produce.time GEE, binomial error structure, exchangeable correlation Wald, Inline graphic p = 0.0003
produce.freq GEE, binomial error structure, exchangeable correlation Wald, Inline graphic p = 0.44
alone.time GEE, binomial error structure, exchangeable correlation Wald, Inline graphic p = 0.083
alone.freq GEE, binomial error structure, exchangeable correlation Wald, Inline graphic p = 0.021
scrounge.time GEE, binomial error structure, exchangeable correlation Wald, Inline graphic p = 0.0001
scrounge.freq GLS, binomial error structure, exchangeable correlation, varIdent for homogeneity L-ratio = 21.41 d.f. = 2 p < 0.0001

aThe explanatory variables of all models are group size, body mass and mass rank.

bSignificant p-values for the effect of group size are indicated in bold, trends in italic.