Table 2.

Results of multivariable linear regression model (n = 163)

	Unadjusted to creatinine
	Beta coefficient	p-value
Intercept	− 0.4	0.95
Creatinine	1.38	0.04
Population subgroup (Arabs compared to Jews)	0.46	0.16
Number of smokers in the child’s home	1.27	< 0.01
Maternal education	− 2.32	< 0.01
Forbidden to smoke at home	− 0.27	0.29