Table 1. Socio-demographic associations with passenger seatbelt use among respondents ages 18 and older in the United States.

	Ride without seatbelt				Unadjusted		Adjusted
	No (N = 37,905)		Yes (N = 1,354)
	Row %	95% CI	Row %	95% CI	OR	(95% CI)	OR	(95% CI)
Sociodemographic Factors
Age
18-25 years	96.33	(96.0-96.6)	3.67	(3.3-4.0)	1.00		1.00
26-49 years	97.45	(97.1-97.7)	2.55	(2.2-2.9)	0.69	(0.58-0.81)	0.86	(0.72-1.01)
50+ years	98.26	(97.7-98.7)	1.74	(1.3-2.3)	0.47	(0.35-0.62)	0.51	(0.38-0.68)
Gender
Female	98.34	(98.0-98.6)	1.66	(1.4-2.0)	1.00		1.00
Male	96.85	(96.5-97.2)	3.14	(2.8-3.5)	1.92	(1.53-2.41)	1.90	(1.52-2.38)
Race/Ethnicity
White	97.58	(97.3-97.8)	2.42	(2.1-2.7)	1.00		1.00
African-American	98.19	(97.5-98.7)	1.81	(1.3-2.5)	0.74	(0.52-1.05)	0.54	(0.37-0.78)
Hispanic	97.10	(96.3-97.7)	2.90	(2.3-3.7)	1.20	(0.90-1.60)	0.75	(0.54-1.03)
Other	98.18	(97.0-98.9)	1.82	(1.1-3.0)	0.75	(0.44-1.27)	0.84	(0.49-1.43)
Family Income
< $20,000	96.61	(95.9-97.2)	3.39	(2.8-4.1)	1.00		1.00
$20,000-$49,000	96.94	(96.4-97.4)	3.06	(2.6-3.6)	0.90	(0.70-1.16)	0.94	(0.71-1.23)
$50,000-74,999	98.13	(97.6-98.5)	1.87	(1.5-2.4)	0.54	(0.39-0.75)	0.63	(0.45-0.89)
> $75,000	98.69	(98.3-99.0)	1.31	(1.0-1.7)	0.38	(0.26-0.54)	0.57	(0.38-0.86)
Education Level
Less than H.S.	95.78	(94.9-96.5)	4.22	(3.5-5.1)	1.00		1.00
H.S. Graduate	96.67	(96.1-97.2)	3.32	(2.8-3.9)	0.78	(0.60-1.02)	0.80	(0.61-1.05)
Some College	97.93	(97.4-98.3)	2.07	(1.7-2.5)	0.48	(0.36-0.64)	0.51	(0.36-0.71)
College Graduate	99.32	(99.1-99.5)	0.68	(0.5-0.9)	0.15	(0.11-0.23)	0.19	(0.12-0.30)
County
Large metro	97.92	(97.6-98.2)	2.08	(1.8-2.4)	1.00		1.00
Small metro	97.63	(97.2-98.0)	2.37	(2.0-2.8)	1.15	(0.90-1.46)	0.99	(0.76-1.28)
Non-metro	96.60	(95.9-97.2)	3.40	(2.8-4.1)	1.66	(1.29-2.14)	1.27	(0.96-1.68)

Note: Adjusted odds ratios adjusted for age, gender, race/ethnicity, income, education, and county population density. Odds ratios and confidence intervals in bold are statistically significant (p < .05)