Table 1.

Patient demographics

	Buccal Microarray (n = 10)			Nasal Microarray (n = 15)
	Smokers n = 5	Never n = 5	P-Value	Smokers n = 7	Never n = 8	P-Value
Sex	1 M, 4 F	2 M, 3 F	p = 0.42	6 M, 1 F	6 M, 2 F	p = 0.58
Age	36 (+/- 8)	31 (+/- 9)	p = 0.36	47 (+/- 12)	43 (+/- 18)	p = 0.46
Race	3 CAU, 2 AFA	2 CAU, 3 AFA	p = 0.40	3 CAU, 3 AFA, 1 HIS	5 CAU, 2 AFA, 1 HIS	p = 0.73

Demographic data for patient samples used in the microarray studies (n = 25). Clinical information including sex, age, and race are included (CAU – Caucasian, AFA – African American, HIS – Hispanic). Statistical comparisons were performed between smokers vs. nonsmokers within each tissue type. P-values for sex and race were determined by Fisher exact test.