Characteristics of the study sample pooled and across anemia types.

<p>IDA = iron deficiency anemia; NIDA = non-iron deficiency anemia; sTfR = soluble transferrin receptor; CRP = C-reactive protein; BMI = body mass index; WRAML = Wide Range Assessment of Memory and Learning.</p><p><i>^*P<0.05</i>, **<i>P<0.01</i>, ***<i>P<0.001</i> compared to the No Anemia group.</p>1<p><i>x</i>−; 95% CI in parentheses (all such values except for otherwise indicated).</p>2<p>Summary score of all questionnaire items calculated by principal components analysis.</p>3<p><i>n</i> = 315.</p>4<p><i>n</i> = 55.</p>5<p><i>n</i> = 203.</p>6<p>Indirect (unconjugated) bilirubin >1 mg/dL.</p>7<p>Spleen size >2 standard deviations (SD) above the reference mean of a healthy Chinese population.