Nonlinear dose-response relationship between serum ferritin and anemia in Chinese children: a matched case-control study.

In contrast, no significant associations were found across any SF quartiles among males (all p > 0.05), nor was a significant trend observed ( P for trend = 0.983). 3.5 Model performance Adding BMI and CRP to the base model (age+sex) significantly improved prediction, AUC increased from 0.50 (95%CI:0.45–0.56) to 0.61 (95%CI:0.57–0.66) (ΔAUC = 0.11, p = 0.004) ( Figure 4 ).

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