Table 2.

Results of mixed model analysis of frequency of grooming received (combined model: N=62)

Predictor variable	Significance	β	Z value	SE	Direction
Sex	<0.0001	−0.605	−12.50	0.048	Adult females received more grooming than adult males
Age	<0.001	−0.013	−2.94	0.005	Younger adults received more grooming than older adults.
Dominance rank	<0.0001	−0.0277	−6.89	0.0040	High ranking adults received more grooming than low ranking adults
Social group	-	-	-	-	Random variable
Intercept	<0.0001		31.62

β - regression coefficient, Z – z-statistic value, SE – standard error, Direction – direction of the observed effect