Table 3. . The association between indoor radon exposure (using categorical measurement values) and age-adjusted CLL incidence, after adjusting for latitude.

Population	n	Variable	PE	95% CI for the PE	p-value	Adjusted R-value
Males and Females	272	Radon level				0.43
		Low	REF
		Medium	0.657	(-0.150, 1.464)	0.110
		High	1.165	(0.440, 1.891)	0.002
		Latitude	0.045	(-0.011, 0.101)	0.113
Males only	214	Radon level				0.43
		Low	REF
		Medium	0.248	(-1.116, 1.611)	0.721
		High	1.699	(0.481, 2.916)	0.006
		Latitude	0.077	(-0.018, 0.172)	0.110
Females only	163	Radon level				0.31
		Low	REF
		Medium	0.226	(-0.652, 1.105)	0.611
		High	0.871	(0.072, 1.671)	0.033
		Latitude	0.016	(-0.046, 0.078)	0.606

CI: Confidence Interval; PE: Parameter estimate.