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. Author manuscript; available in PMC: 2023 Apr 1.
Published in final edited form as: Pediatr Pulmonol. 2022 Jan 20;57(4):935–944. doi: 10.1002/ppul.25825

FIGURE 1.

FIGURE 1.

Boxplots of serum concentrations and supplement intakes of vitamins A, D and E at ages 4 mo, 1 y, 2 y and 3 y of age. The percentage under each bar indicates the prevalence of vitamin insufficiency (retinol <200 ng/mL; 25OHD <30 ng/mL; α-tocopherol <5 μg/mL) or supplement intake meeting the lower limit recommended in the CFF guidelines (vitamin A: ≥1500 IU for age ≤ 1 y and ≥5000 IU for age ≥2 y; vitamin D: ≥400 IU for age ≤ 1 y and ≥800 IU for age ≥2 y; vitamin E: ≥40 IU for age ≤ 1 y and ≥80 IU for age ≥2 y). P values indicate differences across age groups.