Table 3.

Linear regression analyses examining child exposure as assessed by hair nicotine (log hair nicotine) and by usual location of smoking.

	n, Model R2		Least Squared Mean/Beta [SE]	p-Value
Model 3 (Bivariable, controlling for batch)	141, 0.32
		Location		0.46
		GYO a	−2.27
		Balcony	−2.49
		Indoors	−2.11
		Batch	Range:−0.63,−3.86	<0.001
Model 4 (Multivariable)	115, 0.43	Location		0.87
		GYO a	−2.42
		LSM Balcony	−2.56
		LSM Indoors	−2.41
		Batch	Range: −5.06–−0.78	<0.001
		Child Age (months)	−0.008 [0.006]	0.21
		Child Sex		0.22
		Girl	−2.63
		Boy	−2.29
		Parental Combined CPD b	0.03 [0.016]	0.04
		Parental Smokers		0.30
		Both parents smoke	−2.31
		One parent smokes	−2.62
		Parental Nationality		0.47
		Both Israeli born	−2.36
		Not both Israeli born	−2.57
		Maternal Education c		0.42
		Not Academic	−2.59
		Academic	−2.34
		Paternal Education c		0.002
		Not academic	−1.97
		Academic	−2.96
		Monthly household income		0.67
		Average or below average	−2.53
		Above average	−2.40
		Neighborhood SES	0.004 [0.045]	0.92

^a GYO: garden, Yard, or other places outside of the home. ^b CPD: cigarettes smoked per day. ^c Academic: With at least some university education, versus without any university education.