. Author manuscript; available in PMC: 2020 Jul 1.

Published in final edited form as: Mov Disord. 2019 Jun 10;34(7):1006–1013. doi: 10.1002/mds.27730

Table 2:

SN QSM outcomes over 3 years of follow-up in HC and PD

	HC (n = 16)		PD (n = 18)
	Baseline	Follow-Up	Baseline	Follow-Up	Group effect	Time effect	Group × Time interaction effect
	Ventral substantia nigra (inferior to red nucleus)
pSN	62.1 (29.1)	58.8 (25.3)	113.1 (36.2)	125.4 (33.4)	< 0.001	0.15	0.02
aSN	124.0 (38.4)	116.6 (55.2)	160.7 (40.4)	171.8 (55.1)	0.042	0.02	0.043
	Dorsal substantia nigra (adjacent to red nucleus)
pSN	66.9 (23.5)	68.1 (13.2)	78.0 (35.0)	82.3 (28.5)	0.408	0.716	0.716
aSN	100.8 (39.4)	104.2 (33.8)	111.3 (36.0)	122.0 (42.2)	0.716	0.655	0.428

Legend: HC=healthy controls, PD=Parkinson’s disease. Cells represent mean (standard deviation) and are expressed in parts per billion. Group, time and group × time interaction effect values are p-values after correction for the false discovery rate.