Differential Diagnosis Tool for Parkinsonian Syndrome Using Multiple Structural Brain Measures

Table 3

The coefficients of discriminant analysis.

		Factor 1	Factor 2	Factor 3
Stepwise method	4th Vent_vol	1.74	19.47	3.33
	SN	19.16	−9.81	38.32
	ST	−127.87	3.14	−32.07
	PF	196.3	80.22	−188.97
	(Constant)	0.66	−4.13	−5.99
Two independent variables analysis	Pons	−76.33	69.41	(—)
	ST	97.92	13.01	(—)
	(Constant)	−6.98	11.27	(—)
Three independent variables analysis	4th Vent_vol	1.14	15.82	12.23
	MCP	−24.59	−5.39	23.04
	ST	100.68	−13.21	6.19
	(Constant)	−4.01	−3.68	−13.58

4th Vent_vol: fourth ventricle volume; MCP: middle cerebellar peduncle; SN: substantia nigra; ST: superior temporal region; PM: primary motor region.