Table 6– Effect of chest radiograph findings on forced vital capacity % predicted, adjusting for age, sex, smoking status and body mass index (BMI)

	Profusion ≥1/0	Plaque with or without calcification	DPT and/or CAO
Females
Never-smokers
Subjects n	1233	1299	1234
Intercept	133.11*	133.19*	133.14*
Radiograph	ns	ns	ns
Age	-0.32*	-0.32*	-0.32*
BMI	-0.41*	-0.41*	-0.41*
Ever-smokers
Subjects n	1116	1196	1127
Intercept	141.83*	142.03*	141.71*
Radiograph	ns	ns	-6.73*
Age	-0.58*	-0.59*	-0.58*
BMI	-0.37*	-0.37*	-0.37*
Males
Never-smokers
Subjects n	684	767	685
Intercept	116.98*	117.25*	116.96*
Radiograph	ns	-4.28*	-23.77*
Age	ns	ns	ns
BMI	-0.46*	-0.47*	-0.46*
Ever-smokers
Subjects n	692	848	699
Intercept	119.92*	125.10*	124.73*
Radiograph	ns	-4.43*	-9.77*
Age	ns	-0.13*	-0.10*
BMI	-0.64*	-0.58*	-0.63*

DPT: diffuse pleural thickening; CAO: costophrenic angle obliteration; ns: nonsignificant. *: p<0.05.