. Author manuscript; available in PMC: 2014 Apr 23.

Published in final edited form as: Arch Pediatr Adolesc Med. 2012 Sep 1;166(9):851–856. doi: 10.1001/archpediatrics.2012.170

Table 2.

Plasma Cotinine Levels by Race/Ethnicity

Race/Ethnicty	No. of Subjects	Geometric Mean (SD) Cotinine Level, ng/mL	Multiplicative Factor^a Change in Cotinine (95% CI)
All	274	0.23 (3.55)
Latino	164	0.14 (2.48)	1 [Reference]
African American	65	0.87 (3.33)	6.01 (4.49–8.05)
Asian	24	0.13 (2.32)	0.93 (0.60–1.44)
White	15	0.22 (3.42)	1.52 (0.89–2.61)
Other	6	0.23 (5.70)	1.58 (0.69–3.62)

Derived from linear regression and representing the multiplicative change in cotinine concentration relative to Latinos after controlling for age and sex.