. 2016 Jan 11;11(1):e0146129. doi: 10.1371/journal.pone.0146129

Table 2. Comparison of iron, ferritin, and transferrin peripheral blood levels between patients with Parkinson’s disease and controls.

	Parkinson’s disease	Control	P
Iron (μg/dL) (median-IR)	67.50 (56.5–82)	78 (64.5–89)	0.034^a^*
Ferritin (ng/mL) (median- IR)	142.5 (73.7–255)	161 (101.5–221)	0.499^a
Transferrin (mg/L) Mean (±SD)	273.20 (±49.1)	253.80 (±44.8)	0.065^b

Data are presented as median ± interquartile range and means ± SD for n = 40–46 in each group. Statistical analyses employed were ^aMann-Whitney U test and ^bStudent’s t test.

*P was significant when P<0.05.

Iron levels were lower between cases compared to control. Ferritin and transferrin levels were not significantly different between groups.