Table 3.

Adjusted Odds Ratios (OR's) for association of screening activities with advanced stage at diagnosis of non-small cell lung cancer

Variable	Advanced Stage Regional/Distant/Unknown
	OR*	95% CI
Screening Activity
Sigmoidoscopy/Colonoscopy	0.55	(0.36 - 0.86)
PSA	0.93	(0.50 - 1.74)
Mammogram	1.55	(0.55 - 4.39)
Number of Screening Activities
One	1.00	(0.48 - 2.07)
Two	0.62	(0.31 - 1.26)
P for trend	0.049

*Adjusted for age, gender, smoking status, income (included missing as a category), education, race/ethnicity, comorbidity, & self-reported COPD