Table 4H.

Metal concentrations in the CB of PDD cases and controls.

Metal	Units	PDD (n = 9)	Controls (n = 9)	p-value
Na	mmol per kg	222.4 (161.6–283.1)	214.3 (184.8–243.9)	0.8
Mg	mmol per kg	20.7 (18.4–23.0)	20.1 (18.5–21.7)	0.9
K	mmol per kg	275.3 (226.5–324.1)	267.7 (224.8–310.5)	1.0
Ca	mmol per kg	4.2 (3.4–5.0)	4.4 (3.9–4.9)	0.4
Mn	μmol per kg	19.6 (14.1–25.1)	20.8 (16.6–25.0)	0.6
Fe	mmol per kg	4.2 (2.9–5.4)	3.8 (2.3–5.2)	0.6
Cu	μmol per kg	324.2 (256.5–391.8)	328.3 (161.5–495.2)	0.6
Zn	μmol per kg	736.4 (595.0–877.9)	698.4 (582.5–814.4)	0.8
Se	μmol per kg	8.0 (6.8–9.1)	7.1 (6.2–8.0)	0.2

Data are means (±95% CI) taken over three replicate runs; P-values for significance of between-group differences were calculated by Mann-Whitney U-test. P < 0.05 is considered significant.