Elevated serum growth differentiation factor 15 in multiple system atrophy patients: A case control study

Table 2 Serum levels of growth differentiation factor 15 in different subgroups of multiple system atrophy

Subgroups	GDF15, pg/mL	P value
Age of onset
> 50 yr	1156.99 (1028.41)	0.185
≤ 50 yr	795.32 (605.42)
Gender
Female	795.31 (698.54)	0.043
Male	1311.84 (1214.16)
Clinical subtype
MSA-P	1121.82 (897.09)	0.622
MSA-C	916.14 (1009.59)
Diagnosis criteria
Probable	887.55 (1004.50)	0.561
Possible	1182.16 (753.32)
Duration
> 3 yr	1393.79 (1021.36)	0.000
≤ 3 yr	612.31 (527.96)

GDF15: Growth differentiation factor 15; MSA-P: Multiple system atrophy-parkinsonian type; MSA-C: Multiple system atrophy-cerebellar type.