TABLE 2.

—Independent Variables Used in Hierarchical Logistic Regression Models of Medical Checkups^a: Iowa 1996 Behavioral Risk Factor Surveillance System

	ORs
Model	Basic	Extended	Final	95% CI
Predisposing characteristics
Age,b y
25–34	0.69*	0.71*	0.66**	0.48, 0.90
35–44	0.57†	0.58***	0.54†	0.39, 0.74
45–54	0.75	0.72	0.63**	0.45, 0.89
55–64	0.86	0.81	0.68*	0.47, 0.99
≥65	1.54*	1.38	1.04	0.73, 1.48
Sex (male)	0.45†	0.43†	0.42†	0.36, 0.50
Marital status (married)	1.29**	1.28**	1.29**	1.07, 1.56
Enabling resources
Income,b $
10 000–15 000	1.33	1.38	1.45	0.92, 2.28
15 001–20 000	1.36	1.36	1.44	0.92, 2.24
20 001–25 000	0.95	0.94	1.01	0.67, 1.53
25 001–35 000	1.10	1.06	1.18	0.81, 1.73
35 001–50 000	1.15	1.11	1.22	0.82, 1.82
50 001–75 000	1.09	1.00	1.13	0.74, 1.74
>75 000	1.99**	1.76*	2.02**	1.22, 3.35
Have any health insurance	1.87†	1.85†	1.73***	1.27, 2.36
Medical cost barriers	0.59***	0.62**	0.62**	0.46, 0.85
Perceived needs
Health statusb
Very good	1.40**	1.48†	1.40**	1.14, 1.73
Good	1.21	1.38**	1.22	0.97, 1.54
Fair	1.67**	2.05†	1.67**	1.17, 2.40
Poor	2.63**	3.63†	2.47**	1.32, 4.64
Personal health behaviors
Any physical activity		1.31**	1.34**	1.11, 1.61
Smoking statusb
Smoke every day		0.79*	0.80*	0.66, 0.99
Smoke some days		1.62*	1.61*	1.05, 2.50
Former smoker		1.31*	1.29*	1.04, 1.60
Chronic medical conditions
Diabetes			2.83†	1.70, 4.70
Cardiovascular disease			1.78**	1.20, 2.63
Hypertension			1.67†	1.34, 2.09

Note. ORs = odds ratios; CI = confidence interval.

^aBolded text highlights significant associations.

^bThe reference groups are aged 18–24 years, income <$10 000, excellent health status, and never smoked.

*P<.05; **P<.01; ***P<.001; ^†P<.0001.