Table 5

Relation of lung function to body mass index or weight, with and without adjustment for BHR, estimated by random effects meta-analysis of regression coefficients across 34 centres. All analyses adjusted for independent variables as described in text

		Men (n=5899)				Women (n=5354)
Lung function parameter	Adjustment for BHR	Meta-analysis regression coefficient	95% CI	p value for regression coefficient	p value for heterogeneity	Meta-analysis regression coefficient	95% CI	p value for regression coefficient	p value for heterogeneity
*Internally standardised difference between FEV₁ and value predicted for sex, age and height, divided by residual standard deviation.
FEV₁, standardised difference*	No	−0.015	−0.025 to −0.006	0.001	0.149	−0.008	−0.014 to 0.001	0.025	0.84

FEV₁/FVC%	No	−0.067	−0.120 to −0.015	0.012	0.39	−0.072	−0.132 to −0.013	0.017	0.002

FEV₁, standardised difference*	Yes	−0.011	−0.020 to −0.002	0.018	0.15	−0.005	−0.011 to 0.002	0.15	0.58

FEV₁/FVC%	Yes	−0.030	−0.079 to 0.019	0.22	0.50	−0.051	−0.105 to 0.003	0.063	0.011