Table 3. Association between breastfeeding and childhood overweight and obesity, stratified by age groups.

		Overweight			Obesity
Age group	Breastfeeding	n overweight (n complete )	OR (95% CI)	p-value	n obese (n complete )	OR (95% CI)	p-value
3–6 years				0.973			0.743
	<4 months	102 (1123)	1		40 (1123)	1
	≥4 months	95 (1109)	1.01 (0.75–1.35)		28 (1109)	0.74 (0.45–1.22)
7–10 years				0.001			0.002
	<4 months	222 (1196)	1		90 (1196)	1
	≥4 months	153 (1249)	0.67 (0.53–0.84)		50 (1249)	0.56 (0.39–0.81)
11–13 years				0.184			0.965
	<4 months	151 (803)	1		49 (803)	1
	≥4 months	127 (826)	0.84 (0.64–1.09)		45 (826)	0.99 (0.64–1.52)
14–17 years				0.166			0.255
	<4 months	152 (895)	1		74 (895)	1
	≥4 months	120 (833)	0.83 (0.63–1.08)		56 (833)	0.81 (0.56–1.17)

*matched sample (n = 8034), adjusted for sex, socioeconomic status, and parental overweight