TABLE 2.

Multiple Logistic Regression Models of Vietnamese Americans Having Ever Had Sigmoidoscopy or Colonoscopy: Alameda and Santa Clara Counties, CA, and Harris County, TX; 2004–2007

Variables	Basic Outcome Model, OR (95% CI)	Mediator Model, OR (95% CI)
Intervention effect	1.44* (1.03, 1.99)	1.20 (0.85, 1.69)
Health insurance coverage
Have private insurance	2.15* (1.42, 3.27)	2.04* (1.34, 3.12)
Have public insurance	1.72* (1.15, 2.57)	1.67* (1.10, 2.52)
Have access to county indigent care	1.02 (0.64, 1.61)	0.99 (0.61, 1.60)
Have regular place of care	1.32 (0.99, 1.75)	1.24 (0.92, 1.67)
Have personal doctor	1.32 (0.87, 2.00)	1.38 (0.88, 2.15)
Have Vietnamese personal doctor	0.83 (0.58, 1.18)	0.78 (0.53, 1.15)
Knowledge, attitudes, and beliefs
Have heard of colon polyps	NA	1.73* (1.32, 2.27)
Worry about colon cancer	NA	0.97 (0.75, 1.26)
Think might get colon cancer	NA	1.43* (1.09, 1.88)
Think need sigmoidoscopy or colonoscopy even if feeling healthy	NA	1.11 (0.87, 1.40)
Afraid sigmoidoscopy or colonoscopy might find cancer	NA	0.72 (0.50, 1.04)
Think sigmoidoscopy or colonoscopy painful	NA	0.68* (0.52, 0.90)
Think sigmoidoscopy or colonoscopy preparation troublesome	NA	1.46* (1.14, 1.87)

Note. CI = confidence interval; NA = not applicable to the basic outcome model; OR = odds ratio. Both the basic outcome model and the mediator model included terms for time, place, and intervention effect and adjusted for age (50–64, 65–74 years), gender, marital status, education, income, employment status, years in the United States, English fluency, health status, and having health insurance coverage, a regular place of care, a personal doctor, and a Vietnamese personal doctor. The Mediator Model also included knowledge, attitude, and belief variables.

*P < .05.