Table 3

Mean annual decline^3-150 in FEV_0.75 during the whole 30 years

Smoking status	n	Mean age (years)^3-151	Baseline FEV_0.75 (ml)^3-152	Decline (ml/year)^3-150	p Value
Never	100	47.6	3412	–34.8	<0.001
Past at the baseline	62	46.2	3390	–36.1	<0.001
Permanent quitters	96	46.2	3264	–39.8	<0.001
Intermittent quitters	32	47.0	3549	–41.4	<0.001
Continuous	121	45.9	3294	–51.8	–
For trend					<0.001

↵3-150 Adjusted for age and baseline pulmonary function. Continuous smokers are reference group.
↵3-151 At baseline.
↵3-152 At baseline, adjusted for age and height.