Table 1.

Baseline characteristics of adults in the USA participating in the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) (n = 43,093) (USA, 2001 and 2002)

Individual-level characteristics	Baseline		Follow-up
	Unweighted (n)	Weighted percentage	Unweighted (n)	Weighted percentage
Sex
Male	18,518	47.9	14,477	47.9
Female	24,575	52.1	19,968	52.1
Age, years
18–29	8666	21.8	6692	21.8
30–39	8942	20.1	7261	20.1
40–49	8458	20.8	7112	20.8
50–59	6454	15.7	5439	15.7
60–69	4550	9.9	3790	10.5
70–79	3861	7.7	2899	7.9
80–89	1886	3.5	1152	3.0
≥90	276	0.5	100	0.2
Racial background
White	24,507	70.9	20,064	71.0
Black	8245	11.1	6543	11.0
Native	701	2.1	572	2.2
Asian	1332	4.4	951	4.2
Hispanic	8308	11.6	6315	11.6
Household income
Low	15,330	28.4	11,378	26.8
Moderate	16,575	38.9	13,539	39.4
High	11,188	32.7	9528	33.8
Education
Less than high school	5744	15.7	5694	14.6
High school	9955	29.3	9890	29.0
Post-secondary	14,863	43.3	14,791	44.2
Graduate school	4091	11.7	4070	12.2
Marital status
Couple	22,081	61.6	16,123	63.1
Single	21,012	38.4	18,322	36.9
Setting
Urban	15,002	29.5	11,590	28.9
Suburban	20,295	50.7	16,300	50.6
Rural	7796	19.7	6555	20.5
Gini quartile
1st	4158	11.3	3572	12.2
2nd	8395	20.7	6922	21.4
3rd	10,501	25.7	8527	26.1
4th	20,039	42.2	15,424	40.3
State-level characteristics (n = 51)	Mean (SD)	Median	Inter quartile range	Range
Gini coefficient	0.44	0.44	0.025	0.293–0.529
State median income	41,468 (6290)	41,605	9616	29,052–51,695
Proportion black	10.8 (11.8)	6.6	13.59	0.41–60
Proportion poor	11.5 (3.1)	10.5	4.3	7.3–19.3
State population	5,518,077 (6,164,026)	4,012,012	5,055,144	493,782–33,871,648