Table 2. Demographic features of the samples used.

Sample type	N	Age at onset (SD)	Age at sampling (SD)	M:F ratio	Proportion MSA-C
NNIPPS samples
MSA all	239	58.0 (8.43)	62.8 (8.25)	0.56	0.44
Pathological diagnosis	44	57.0 (8.41)	61.9 (7.94)
Clinical diagnosis	195	58.2 (8.44)	63.1 (8.32)
Controls	617	N/A	61.0 (12.9)	0.47	N/A
Replication samples
Paris Sample Bank	83	54.7 (8.67)		0.65
IoN Brain Bank	78	56.5 (10.0)		0.47