Estimate	SE	t	p	ci.lb	ci.ub
Intercept	0.44	0.80	0.54	.59	−1.15	2.03
Reproductive mode
Oviparous
Viviparous	−1.13	0.42	−2.71	.007**	−1.94	−0.31
Age at offspring measurement
Juvenile
Perinatal	−0.35	0.10	−3.54	.0004**	−0.54	−0.16
Maturity	0.24	0.22	1.10	.27	−0.19	0.67