Table 3. Reproducibility measure R and associated p-value p for various pairwise comparisons between datasets with standard highpass preprocessing (‘standard’), global signal regression (GS) and respectively bandpass filter (BP) (‘0’–‘low in scanner motion’, ‘center32’–scans performed at a single PPMI center).

Dataset 1	Group contrast 1	Dataset 2	Group contrast 2	standard		GS		BP
				R	p	R	p	R	p
NEUROCON	NC-PD	Tao Wu	NC-PD	-0.145955	0.949	-0.0679698	0.804	0.000845579	0.476
	NC0-PD0		NC0-PD0	-0.0832455	0.847	0.035725	0.300	0.0132475	0.437
NEUROCON	NC-PD	PPMI	NC-PD	0.0692377	0.257	0.10039	0.138	-0.163251	0.937
	NC0-PD0		NC0-PD0	0.0401831	0.352	0.0308243	0.373	-0.0824776	0.800
	NC-PD		NC_center32-PD_center32	-0.0122797	0.526	0.0188561	0.430	-0.142598	0.914
	NC0-PD0		NC0_center32-PD0_center32	-0.0873994	0.813	-0.0894912	0.832	-0.152545	0.945
Tao Wu	NC-PD	PPMI	NC-PD	0.00673472	0.466	0.0228885	0.403	0.0948706	0.153
	NC0-PD0		NC0-PD0	-0.0182896	0.560	0.044843	0.298	0.0545817	0.293
	NC-PD		NC_center32-PD_center32	-0.0446155	0.687	-0.032841	0.666	0.0243423	0.400
	NC0-PD0		NC0_center32-PD0_center32	-0.0712155	0.812	-0.0176842	0.597	-0.0436096	0.681