Table 5.

Regression models for predicting neuropsychological outcomes in children aged 7–8 years according to serum ferritin (SF) levels (mg/L) measured in the first period of pregnancy and total iron intake (mg/day) in the second period of pregnancy. INMA cohort study, Spain 2003–2008.

N-Back Test	B (95%CI)	p	Trail Making Test A	B (95%CI)	p
d’ numbers 2- back			Response time in seconds
SF (<12 µg/L vs. 12–60 µg/L)	0.4 (0.1–0.7)	0.011	SF (<12 µg/L vs. 12–60 µg/L)	−7.9 (−14.5–−1.4)	0.017
SF (<12 µg/L vs. >60 µg/L)	0.5 (0.1–0.8)	0.013	SF (<12 µg/L vs. >60 µg/L)	−6.9 (−15.4–1.7)	0.114
N-Back Test d’ numbers 2- back			N-Back Test d’ numbers 3- back
Total iron intake (T1 vs. T2)	0.3 (0.1–0.5)	0.014	Total iron intake (T1 vs. T2)	0.1 (−0.1–0.3)	0.189
Total iron intake (T2 vs. T3)	0.3 (0.1–0.5)	0.016	Total iron intake (T2 vs. T3)	0.2 (0.1–0.4)	0.024