Table 6.

Associations Between Body Mass Index (BMI) Levels and Other Factors and Up-to-Date Colorectal Cancer (CRC) Screening in Two Multivariable Logistic Regression Models, Maryland Cancer Survey 2002

Category	Model 1a		Model 2b
	OR (95% CI)	P Value	OR (95% CI)	P Value
BMI (kg/m2)
<25 (normal and underweight)	Ref		Ref
25-29.9 (overweight)	1.07 (0.89-1.27)	.48	1.05 (0.83-1.33)	.70
≥30 (obese)	1.07 (0.88-1.30)	.52	0.84 (0.65-1.09)	.19
Sex
Female	Ref		Ref
Male	0.94 (0.80-1.11)	.49	1.01 (0.81-1.25)	.96
Race
White	Ref		Ref
Black	0.98 (0.80-1.21)	.88	1.16 (0.87-1.55)	.31
Other	0.73 (0.49-1.08)	.11	0.77 (0.46-1.29)	.33
Age, y
50-64	Ref		Ref
≥65	1.43 (1.17-1.74)	<.001	1.45 (1.10-1.90)	.008
Marital status
Not married	Ref		Ref
Married	1.43 (1.22-1.67)	<.001	1.16 (0.94-1.44)	.17
Education
High school graduate or less	Ref		Ref
Some college or more	1.62 (1.38-1.90)	<.001	1.32 (1.07-1.64)	.01
Employment
Retired	Ref		Ref
Employed for wages	0.67 (0.55-0.83)	<.001	0.63 (0.47-0.83)	.001
Self-employed	0.46 (0.33-0.64)	<.001	0.49 (0.32-0.76)	.002
Not employed	0.59 (0.45-0.77)	<.001	0.68 (0.48-0.98)	.04
Geographic area
Rural	Ref		Ref
Urban	1.26 (1.07-1.48)	.006	1.23 (0.99-1.53)	.06
Health insurance
Yes	—		0.98 (0.58-1.68)	.95
No	—		Ref
Physical examination in last 2 years
Yes	—		2.53 (1.65-3.90)	<.001
No	—		Ref
Screening recommendation from provider
Yes	—		36.7 (28.7-47.0)	<.001
No	—		Ref

OR indicates odds ratio; CI, confidence interval; ref, reference group; dash (—), not included in model.

^aModel 1 includes only sociodemographic characteristics.

^bModel 2 includes sociodemographic characteristics and health-care–related variables.