Table 1

Per allele percentage increases in measures of regional adiposity (BMI, weigh, waist circumference, hip circumference, waist-hip ratio) among never, ex and current smokers, before and after adjustment for BMI

		Adjusted for age				Adjusted for age and BMI		p For interaction*
BMI (kg/m²)	Never-smokers	Former smokers	Current smokers	p For interaction*	Never-smokers	Former smokers	Current smokers	p For interaction*
% increase	0.35	−0.14	−0.74		–
95% CI	(0.18 to 0.52)	(−0.34 to 0.07)	(−0.96 to −0.51)
p	6.38×10⁻⁵	0.19	2.00×10⁻¹⁰	4.95×10⁻¹³
N	66 809	43 009	38 912
I²	14%	0%	0%
Waist circumference (cm)
% increase	0.23	−0.07	−0.40		0.01	0.06	0.14
95% CI	(0.09 to 0.36)	(−0.24 to 0.09)	(−0.57 to −0.22)		(−0.06 to 0.08)	(−0.02 to 0.15)	(0.05 to 0.22)
p	0.0012	0.37	1.69×10⁻⁵	3.85×10⁻⁷	0.72	0.15	0.003	0.087
N	64 265	40 756	37 360
I²	14%	0%	10%		0%	0%	13%
Hip circumference (cm)
% increase	0.17	−0.07	−0.31		0.02	0.02	0.02
95% CI	(0.08 to 0.26)	(−0.17 to 0.04)	(−0.42 to −0.19)		(−0.03 to 0.07)	(−0.04 to 0.08)	(−0.05 to 0.08)
p	2.95×10⁻⁴	0.23	2.55×10⁻⁷	1.79×10⁻⁹	0.38	0.54	0.59	0.99
N	62 323	40 512	36 833
I²	7%	0%	0%		16%	0%	0%
Waist-hip ratio
% increase	0.07	0	−0.08		−0.01	0.04	0.1
95% CI	(−0.01 to 0.15)	(−0.10 to 0.10)	(−0.19 to 0.03)		(−0.08 to 0.06)	(−0.04 to 0.13)	(0.02 to 0.19)
p	0.087	0.97	0.14	0.083	0.78	0.30	0.02	0.13
N	62 322	40 512	36 833
I²	21%	9%	15%		0%	0%	13%

*Interaction assessed by assessing heterogeneity between effect estimates according to smoking status, with a fixed effects model.
BMI, body mass index.