Solution for Survey Discrepancies in Washington State Smoking Prevalence

Table

Washington State Smoking Prevalence Rates Based on the Adult Tobacco Survey (ATS) and Behavioral Risk Factor Surveillance System (BRFSS), 2000–2002

Year	ATS^a		BRFSS^a		χ²₁ (P)^c

	Current Smokers, No. (%)	95% CI^b	Current Smokers, No. (%)	95% CI^b
2000	1783 (18.9)	17.6-20.2	746 (20.7)	19.3-22.3	3.5 (.06)
2001	2093 (17.0)	16.0-18.0	939 (22.5)	21.1-23.9	39.7 (<.001)
2002	1432 (16.1)	15.2-17.0	969 (21.5)	20.0-23.0	39.4 (<.001)

^aThe Council of American Survey Research Organizations (CASRO) response rates were generally lower for the ATS (35%–40%) than for the BRFSS (40%–50%)

^bCI indicates confidence interval.

^cThe design-based F statistic was used to calculate the chi-square value.

Prev Chronic Dis. 2006 January; 3(1): A27.

Published online 2005 December 15.