Dietary vitamin A intakes of chinese children with adequate liver stores as assessed by the retinol isotope dilution technique

Table 3 Partial correlations of dietary intakes with vitamin A status in the subjects¹

Measured from blood samples	Estimated from dietary records	r	P
Total body vitamin A stores²	Vitamin A (µg RE)³	0.308	0.025
Total body vitamin A stores	Vitamin A (µg RAE)⁴	0.280	0.043
Total body vitamin A stores	β-Carotene (µg)	0.322	0.019
Total body vitamin A stores	Carbohydrate (g)	-0.039	0.781
Total body vitamin A stores	Protein (g)	0.027	0.847
Total body vitamin A stores	Total fat (g)	0.050	0.723
Liver vitamin A concentrations⁵	Vitamin A (µg RE)³	0.349	0.010
Liver vitamin A concentrations	Vitamin A (µg RAE)⁴	0.313	0.022
Liver vitamin A concentrations	β-Carotene (µg)	0.382	0.005
Liver vitamin A concentrations	Carbohydrate (g)	0.009	0.948
Liver vitamin A concentrations	Protein (g)	0.050	0.722
Liver vitamin A concentrations	Total fat (g)	0.058	0.681
Serum retinol concentrations	Vitamin A (µg RE)³	-0.068	0.631
Serum retinol concentrations	Vitamin A (µg RAE)⁴	-0.075	0.594
Serum retinol concentrations	β-Carotene (µg)	-0.013	0.928
Serum retinol concentrations	Carbohydrate (g)	-0.159	0.257
Serum retinol concentrations	Protein (g)	-0.283	0.040
Serum retinol concentrations	Total fat (g)	-0.217	0.119

¹Partial correlation analysis coefficients (r) were calculated form 58 children (all variables were normal distribution when one-sample kolmogorov-smirnov test was used). Control variables were age, gender, height, and weight
²Total body vitamin A stores were assessed by using the deuterated-retinol-dilution procedure
³RE, retinol equivalents. Total amounts of dietary vitamin A intake were presented as RE, including the amount of retinol and carotenoids intake. RE (µg) = retinol (µg) + 1/6 β–carotene (µg) + 1/12 other carotenoids (µg)
⁴RAE, retinol activity equivalents. Total amounts of dietary vitamin A intake were presented as RAE, including the amount of retinol and carotenoids intake. RAE (µg) = retinol (µg) + 1/12 β–carotene (µg) + 1/24 other carotenoids (µg)
⁵Liver vitamin A concentrations were estimated by assuming that liver weight is 3.0% of body weight and 90% of total body vitamin A is in the liver
P values that less than 0.05 were bolded

ISSN: 1471-2431