Table 3.

Spearman’s correlations of urinary biomarkers by tobacco product.

	Cigarettes		Commercial		iqmik
	n	ϱ	n	ϱ	n	ϱ
Cotinine (M) – Cotinine (N)	35	0.83 ***	8	0.9 *	16	0.85 ***
NNAL (M) – NNAL (N)	35	0.76 ***	9	0.92 ***	16	0.80 ***
NNAL (M) – Cotinine (M)	35	0.78 ***	9	0.75 *	16	0.65 *
NNAL (M) – Cotinine (N)	34	0.71 ***	8	0.83 *	16	0.59 *
NNAL (N) – Cotinine (N)	35	0.74 ***	8	0.64	16	0.39
NNAL (N) – Cotinine (M)	36	0.73 ***	9	0.6	16	0.36

Maternal and Neonatal Biomarker Correlations by Tobacco Product. M: Maternal, N: Neonatal, *: p < 0.05, ***: p < 0.001. Units – Maternal Cotinine: ng/mg creat, Neonatal Cotinine: ng/ml, Maternal NNAL: pg/mg creatinine, Neonatal NNAL: pg/ml