TABLE 5.

Results of multivariate linear regression analysis for outcomes of lung function in men and women of the stable subgroup living in buffer zones 200 m and 300 m from major roads

Outcome measure	Buffer zone, m	Sex	Patients in buffer zone, n	Unstandardized coefficients		P	95% CI for B	R2
				B	SE
FEV1	200	Female	59	−0.17	0.08	0.029	−0.32 to −0.02	0.48
		Male	94	−0.02	0.15	0.911	−0.32 to 0.28	0.29
FEV1	300	Female	96	−0.16	0.07	0.036	−0.30 to −0.01	0.49
		Male	131	−0.18	0.14	0.203	−0.46 to 0.10	0.30
VC	200	Female	59	−0.27	0.09	0.002	−0.44 to −0.10	0.40
		Male	94	−0.02	0.18	0.918	−0.37 to 0.33	0.13
VC	300	Female	96	−0.23	0.08	0.008	−0.39 to −0.06	0.39
		Male	131	−0.34	0.16	0.037	−0.66 to −0.02	0.15
VC, %	200	Female	59	−4.95	2.36	0.037	−9.6 to −0.31	0.12
		Male	94	−0.05	2.83	0.985	−5.63 to 5.52	0.13
VC, %	300	Female	96	−3.52	2.29	0.125	−8.02 to 0.99	0.11
		Male	131	−5.4	2.59	0.037	−10.53 to −0.33	0.15
		FEV1, L/min (mean ± SD)		Vital capacity, L/min (mean ± SD)			Vital capacity, % (mean ± SD)
Women		2.1±1.1		2.8±1.2			91.4±28.7
Men		2.7±1.3		3.9±1.5			86.8±25.1

FEV₁ Forced expiratory volume in 1 s