Table 3—

Proportion of negative changes of vital capacity (VC) (dVC<0), forced vital capacity (FVC) (dFVC<0) and forced expiratory volume in one second (FEV₁) (dFEV₁<0) for different sex and quartiles of body mass index (BMI) changes (dBMI)

	dBMI quartiles kg·m⁻²				Total
	1st	2nd	3rd	4th	Total
Males
dVC<0	54	58	69	77	64
dFVC<0	54	67	75	79	69
dFEV₁<0	66	71	85	92	78
Females
dVC<0	62	68	71	67	67
dFVC<0	75	69	75	77	74
dFEV₁<0	79	87	86	91	86

Data presented as %