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. 2023 Feb 6;153(4):949–957. doi: 10.1016/j.tjnut.2023.02.002

FIGURE 3.

FIGURE 3

Comparison of vitamin A total body stores (TBSs) using individual and population retinol 13C natural abundance in children and women from 6 African countries. Bland–Altman analysis compared the difference in vitamin A TBSs calculated using individual (TBSindividual) and study population level (TBSstudy) retinol 13C natural abundance against TBSindividual as the reference. Relative TBSstudy error (%) was calculated as (TBSstudy – TBSindividual)/TBSindividual. (A) Children with available TBSindividual data (n = 570) and (B) relative TBSstudy error (%). (C) Lactating and nonlactating women with available TBSindividual (n = 136) and (D) relative TBSstudy error (%).