Table 3. Association between qualified ICFI and children’s nutritional status using QR and OLS models for different quantiles of physical development.

		Length	Weight	HAZ	WAZ	WHZ
poor	10th	0.76 (0.53 to 0.99)	0.20 (0.14 to 0.26)	0.17 (0.10 to 0.24)	0.14 (0.08 to 0.21)	0.05 (-0.02 to 0.13)
	20th	0.65 (0.47 to 0.83)	0.12 (0.07 to 0.18)	0.09 (0.03 to 0.15)	0.10 (0.04 to 0.15)	0.03 (-0.03 to 0.10)
	30th	0.65 (0.49 to 0.82)	0.15 (0.09 to 0.20)	0.09 (0.04 to 0.15)	0.08 (0.02 to 0.13)	0.00 (-0.06 to 0.05)
intermediate	40th	0.58 (0.40 to 0.75)	0.12 (0.06 to 0.18)	0.07 (0.02 to 0.12)	0.05 (0.01 to 0.10)	-0.04 (-0.10 to 0.02)
	50th	0.49 (0.32 to 0.67)	0.10 (0.04 to 0.16)	0.06 (0.01 to 0.11)	0.03 (-0.01 to 0.08)	-0.05 (-0.10 to 0.00)
	60th	0.47 (0.30 to 0.63)	0.09 (0.03 to 0.15)	0.07 (0.02 to 0.12)	0.03 (-0.02 to 0.08)	-0.05 (-0.10 to 0.00)
good	70th	0.52 (0.33 to 0.70)	0.06 (0.00 to 0.12)	0.10 (0.04 to 0.16)	0.02 (-0.03 to 0.06)	-0.05 (-0.10 to 0.00)
	80th	0.52 (0.35 to 0.70)	0.03 (-0.04 to 0.10)	0.10 (0.03 to 0.16)	0.01 (-0.04 to 0.06)	-0.05 (-0.11 to 0.02)
	90th	0.34 (0.09 to 0.59)	0.04 (-0.05 to 0.14)	0.11 (0.04 to 0.19)	-0.01 (-0.08 to 0.06)	-0.03 (-0.11 to 0.05)
OLS		0.62 (0.46 to 0.77)	0.11 (0.06 to 0.16)	0.11 (0.06 to 0.17)	0.07 (0.03 to 0.11)	-0.01 (-0.05 to 0.04)

CI: confidence interval; OLS: ordinary least squares; QR: quantiles regression; values are β-estimates (95%CI);

Ethnic group, province, county rank, wealth index, mother’s education, mother’s age, parity, child's gender and child's age were adjusted in QR and OLS models.