Table 3. Unadjusted and adjusted prevalence odds ratios, with 95% confidence intervals (CI), of the association between antipsychotic medication use and antibody to hepatitis C virus (HCV) among respondents to the 2005–2014 National Health and Nutrition Examination Survey (n = 12,722).

Characteristic	Unadjusted			Adjusted
	OR	[95% CI]	p	aOR	[95% CI]	p
Antipsychotic Use
Yes	3.48	[1.71, 7.09]	<0.01	1.38	[0.44, 4.36]	0.58
No	1.00	Ref.		1.00	Ref.
Age, M [95% CI]				1.10	[1.08, 1.12]	<0.001
Sex, % (n)
Male				1.00	Ref.
Female				0.63	[0.36, 1.10]	0.10
Race, % (n)
Non-Hispanic White				1.00	Ref.
Non-Hispanic Black				1.24	[0.84, 1.81]	0.27
Hispanic				1.18	[0.60, 2.33]	0.63
All other races				0.95	[0.41, 2.20]	0.90
Immigrant status, % (n)
Born in United States				1.00	Ref.
Born outside United States				0.41	[0.15, 1.08]	0.07
Marital status, % (n)
Married or cohabitating				1.00	Ref.
Never married				1.14	[0.68, 1.95]	0.61
Widowed, divorced, or separated				0.87	[0.51, 1.49]	0.61
Education, % (n)
College				1.00	Ref.
High school graduate				1.46	[0.79, 2.70]	0.22
Less than high school				1.81	[1.02, 3.23]	<0.05
Income, M [95% CI]				0.67	[0.57, 0.79]	<0.001
Blood transfusion, % (n)
Yes				1.91	[1.17, 3.11]	<0.05
No				1.00	Ref.
Alcohol use, % (n)
Yes				1.58	[1.03, 2.43]	<0.05
No				1.00	Ref.
Injection drug use, % (n)
Yes				33.09	[18.95, 57.76]	<0.001
No				1.00	Ref.
Sexually transmitted infection, % (n)
Yes				0.24	[0.03, 1.75]	0.16
No				1.00	Ref.

Notes: OR = bivariate prevalence odds ratio; aOR = multivariable prevalence odds ratio; Ref. = reference.