Table 2:

Linear models testing effects of treatment and other covariates on parental behavior in the 28 h following male injection. Latency to return values were log-transformed. Estimates use saline as the reference for treatment. Inclusion and exclusion of covariates was determined via systematic comparison of candidate models (supplemental tables 5-9). Signficant predictors are bolded (p<0.05). Letters denote separate models.

Response variable	Predictor variable	Estimate (± SE)	F-statistic	p-value
Avg male visits per h
(a)	Treatment	2.07 ± 0.90	F1,36=5.28	p=0.028
(b)	GnRH ΔT	−0.46 ± 1.57	F1,21=0.004	p=0.95
	mass	0.90 ± 0.54	F1,21=2.75	p=0.11
(c)	Treatment	2.81 ± 1.25	F1,22=5.01	p=0.04
	Post-inject CORT	−0.043 ± 0.02	F1,22=2.78	p=0.11
Latency to return (h)
(d)	Treatment	−0.030 ± 0.12	F1,36=0.037	p=0.85
Avg female visits per h
(e)	Male treatment	0.51 ± 0.98	F1,33=0.27	p=0.60