Table 4.

Weight retention at six months postpartum in women according to the number of behavioural risk factors.

Number of modifiable risk factors	Unadjusted (n=1571)			Adjusted* (n=1565)
	Coefficient	95% CI	p-value	Coefficient	95% CI	p-value
0	reference	-	-	reference	-	-
1	1.68	0.52, 2.83	0.004	1.86	0.71, 3.01	0.002
2	3.82	2.70, 4.94	<0.001	4.22	3.09, 5.35	<0.001
3	6.81	5.60, 8.01	<0.001	7.20	5.98, 8.41	<0.001
β-trend1	2.35	2.03, 2.68	<0.001	2.49	2.16, 2.82	<0.001

^*Adjusted for gestational age at birth, maternal age at conception, pre-pregnancy diet quality, pre-conception walking speed and postpartum maternal smoking.

¹P-trend was determined by linear regression models of weight retention using a continuous risk factor score.