Regional, socioeconomic, and dietary factors influencing B-vitamins in human milk of urban Chinese lactating women at different lactation stages

Table 4 Multivariate linear regression models considering thiamine, pantothenic acid, vitamin B₆ and folates concentrations in human milk after the ln transformation as the dependent variables and the other variables studied as independent variables

	Thiamine		Pantothenic acid		Vitamin B₆		Folates
	β (95% CI) ^a	P-value	β (95% CI) ^a	P-value	β (95% CI) ^a	P-value	β (95% CI) ^a	P-value
BMI, kg/m²
< 18.5	0.168 (−0.106, 0.442)	0.228			0.098 (−0.251, 0.446)	0.582	0.454 (0.166, 0.743)	0.002
18.5–24.9	Ref				Ref		Ref
25–29.9	−0.150 (−0.284, −0.015)	0.029			−0.203 (−0.374, −0.032)	0.020	−0.138 (−0.279, 0.004)	0.056
≥ 30	−0.298 (−0.667, 0.071)	0.114			−0.583 (−1.052, −0.114)	0.015	−0.044 (−0.432, 0.343)	0.822
Supplement intake
Yes			0.188 (0.061, 0.315)	0.004			0.206 (0.015, 0.396)	0.034
No			Ref				Ref

Adjusted R² for thiamine = 0.463, p < 0.001; adjusted R² for pantothenic acid = 0.106, p < 0.001; adjusted R² for vitamin B₆ = 0.244, p < 0.001; adjusted R² for folates = 0.350, p < 0.001
BMI body mass index; CI confidence interval; Ref reference
^a Adjusted for cities (Beijing, Suzhou, and Guangzhou cities) and lactation stages (postpartum 5–11 d, postpartum 12–30 d, postpartum 31–60 d, postpartum 61–120 d, and postpartum 121–240 d)

ISSN: 2055-0928