. Author manuscript; available in PMC: 2012 Mar 22.

Published in final edited form as: Asian Pac J Cancer Prev. 2011;12(10):2551–2554.

Table 1.

Prevalence of Current Use of Tobacco Products According to Different Measurement Tools (n=1224)

Tools	Classification		Prevalence	Saliva cotinine ng/ml

		N	% (95% CI)	Mean (SD)
Interviewer administered questionnaire	Cigarettes/Bidis	28	2.3 (1.4 – 3.1)	76.2 (81.5)
(Self-reported current use)	Chewing Tobacco	40	3.2 (2.3 – 4.4)	121.7 (85.3)
	Any Tobacco	51	4.1 (3.0 – 5.2)	101.2 (87.0)
	None	1173	95.8 (94.7 – 97.0)	8.6 (33.1)

Salivary Cotinine	> 10 ng/ml	109	8.9 (7.3 – 10.5)	121.1 (78.5)
	> 12 ng/ml	105	8.6 (7.0 – 10.2)	125.3 (76.9)
	> 15 ng/ml	102	8.3 (6.8 – 9.9)	128.6 (75.5)
	> 20 ng/ml	97	7.2 (6.4 – 9.4)	134.3 (73.1)

C.I. Confidence Interval; SD, Standard Deviation.