Table 2 

Effect test for variation in larval yolk sac size over time. 

Model term 
Df 
Sum of sq 
Fratio 
Pvalue 


Treatment 
1 
8.33 
28.96 
<0.0001 
Deme 
3 
10.25 
23.77 
0.0022 
(ln°d)^{2} 
2 
381.10 
1325.30 
<0.0001 
Treatment*Deme 
3 
4.31 
4.99 
0.0001 
Treatment*(ln°d)^{2} 
6 
10.96 
19.06 
<0.0001 
Deme*(ln°d)^{2} 
2 
8.66 
10.04 
<0.0001 
Treatment*Deme*(ln°d)^{2} 
6 
0.90 
0.52 
0.8997 
Replicate [Deme, Treatment] 
12 
1.929 



Summary test statistics for a linear mixed model with ln(yolk sac area) as response variable. Replicate is random effect. Adjusted R^{2 }= 0.713, N = 713. The parameter estimates are available in table A1 in Additional file 1. Square brackets indicate the nesting structure. Layout details: The (ln°d)^{2 }notation indicates the total polynomial effect (i.e., ln°d + (ln°d)^{2}) was fitted as a orthogonal polynome, an asterisk between model terms indicates interaction effect, and Df indicates degrees of freedom for the relevant model term. 

Thomassen et al. BMC Evolutionary Biology 2011 11:360 doi:10.1186/1471214811360 