Table 3.

Associations of RWG and BMI trajectories in the first two years of life and early AR

Physical growth indicators		Sample size (n)	Early AR[RR (95%CI)]
			Model 1	Model 2
RWG (vs. NRWG)
Birth-12 months
	RWG	1162	1.22(1.08,1.38)**	1.21(1.07,1.37)**
	Non-RWG	1406	1.00	1.00
Birth-18 months
	RWG	971	1.48(1.31,1.67)**	1.48(1.30,1.67)**
	Non-RWG	1598	1.00	1.00
Birth-24 months
	RWG	930	1.60(1.41,1.82)**	1.59(1.40,1.81)**
	Non-RWG	1524	1.00	1.00
BMI trajectories
Birth-24 months
	Low BMI trajectory	395	1.22(1.01,1.46)*	1.27(1.06,1.53)**
	Rising BMI trajectory	225	1.52(1.24,1.87)**	1.50(1.22,1.84)**
	Medium BMI trajectory	951	1.00	1.00
	High BMI trajectory	866	0.98(0.84,1.14)	0.96(0.82,1.11)
	Very high BMI trajectory	268	1.17(0.95,1.45)	1.04(0.84,1.28)
Head circumference trajectories
Birth-24 months
	Low head circumference trajectory	728	1.09(0.93,1.28)	1.12(0.97,1.28)
	Medium head circumference trajectory	1425	1.00	1.00
	High head circumference trajectory	552	1.18(0.99,1.41)	0.93(0.79,1.09)

Abbreviations: BMI, body mass index; RWG, rapid weight gain; NRWG, no rapid weight gain; AR, adiposity rebound

Model 1: Crude model

Model 2: Adjusted for maternal age, family monthly income per capita, maternal education level, paternal education level, maternal pre-pregnancy BMI, paternal BMI, parity, maternal metabolic dysfunctions during pregnancy, alcohol use during pregnancy, tobacco use during pregnancy, iron supplementation during pregnancy, folic acid supplementation during pregnancy, and children’s sex

*: P < 0.05; **: P < 0.01