Table 4.

Parameters for the model explaining slow oscillation speed

	b ± SE	p
Fixed effects
Intercept	2.72 ± 1.18	0.02
Quintile	0.02 ± 0.02	0.41
Age	0.008 ± 0.01	0.62
Quintile × age	0.005 ± 0.003	0.05
Head size	−0.008 ± 0.02	0.74
Gender	0.11 ± 0.10	0.28
Random effects
Intercept	0.25
Residual	0.2
AIC	55.59
Pseudo R2 (marginal; conditional)	0.10; 0.65

SE = standard error.