TABLE 1—

Description of Data Sources: Washington State, 2000–2003

	C2SS	BRFSS	Disability Supplement	Disability Supplement	State Population Survey
Year	2000	2001	2001	2003	2000
Disability definitiona	census	BRFSS	BRFSS	BRFSS and census	census
Data collection mode	mail/phone/interview	RDD phone	RDD phone	RDD phone	RDD phone
Response rate, %	95	48	43	44	48
Respondent	household head	individual	individual	individual	household head
Households in sample, No.	8127	4207	2117	2110	6726
Persons aged ≥21 y in sample, No.	approximately 14 400	4029	2023	2007	12 138

Note. C2SS = Census 2000 Supplementary Survey; BRFSS = Behavioral Risk Factor Surveillance Survey; RDD = random-digit-dialed.

^aCensus definition: 1 or more of 6 limitations. BRFSS definition: limited in any activities or use special equipment.