Table. Solution for fixed effects in the random intercept and random slope model for months of age of the children (MOA), smoking status of their mother, and interaction between MOA and smoking status of their mother in the Koshu Project, 1991–2008.

Factor	Male children				Female children
	Estimate	Standard error	t value	P-value	Estimate	Standard error	t value	P-value
	Intercept	−0.42	0.12	−3.6	0.0003	−0.80	0.14	−5.61	<0.0001
	Months of age of children (MOA)	0.02	0.002	8.08	<0.0001	0.01	0.002	4.35	<0.0001
Non-smoking mother	0.04	0.12	0.35	0.73	0.50	0.15	3.44	0.0006
MOA * Non-smoking mother	−0.01	0.002	−4.88	<0.0001	−0.004	0.002	−1.92	0.054