Subjective Vertical Position Allows Prediction of Postural Deterioration in Patients with Parkinson’s Disease

Table 3

Baseline variables and relationships between them.

	Mean	Range	Age (years)	Disease duration (years)	MMSE	mH&Y	FFT angle (°)	SV angle (°)	UPDRS I	UPDRS II	UPDRS III	UPDRS IV	UPDRS total	LED (mg/day)
Age (years)	70.3	55–83
Disease duration (years)	8.6	1–26	−0.428
MMSE score	28.3	25–30	−0.386	0.074
mH&Y score	2.5	1–3.5	0.119	−0.508	0.081
FFT angle (°)	12.8	−11–45	−0.018	0.343	−0.125	−0.404
SV angle (°)	6.0	−9.3–35.7	−0.187	0.219	0.177	−0.096	0.580
UPDRS I	2.2	0–5	0.217	0.068	0.088	0.127	−0.007	0.227
UPDRS II	8.6	1–20	0.250	−0.125	−0.094	−0.136	0.264	0.351	0.292
UPDRS III	14.2	2–30	0.338	−0.373	−0.309	−0.083	0.032	0.171	0.139	0.771
UPDRS IV	2.4	0–11	−0.221	0.449	0.122	0.138	−0.169	−0.236	−0.412	−0.334	−0.478
UPDRS total	27.3	9–50	0.260	−0.091	−0.292	−0.208	0.142	0.214	0.254	0.889	0.914	−0.293
LED (mg/day)	635	333–1124	−0.297	0.233	0.085	−0.243	−0.075	0.149	−0.276	0.160	−0.065	0.253	0.034

Values shown are Spearman correlation coefficients, unless otherwise indicated. MMSE, Mini-Mental State Examination; mH&Y Scale, modified Hoehn & Yahr Scale; FFT angle, forward flexion of trunk angle; SV angle, subjective vertical position angle; UPDRS, Unified Parkinson’s Disease Rating Scale; LED, levodopa-equivalent dose. .