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

Table 5

Relationships between study variables after 1 year of follow-up.

	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)	71.3	56–84
Disease duration (years)	9.8	2–28	−0.449
MMSE	26.9	21–30	−0.286	−0.149
mH&Y	2.5	1–4	−0.101	−0.414	0.223
FFT angle (°)	13.9	5–38	−0.227	0.218	0.114	−0.181
SV angle (°)	11.0	3–23	−0.359	0.139	−0.012	0.198	0.639
UPDRS I	2.4	0–5	−0.057	0.113	−0.296	0.237	−0.529	0.060
UPDRS II	6.7	0–14	0.008	0.027	−0.386	0.164	−0.383	0.064	0.639
UPDRS III	16.5	3–35	0.128	0.057	−0.351	−0.012	−0.270	0.192	0.561	0.624
UPDRS IV	2.2	0–6	−0.223	0.722	−0.151	−0.129	−0.158	−0.199	0.179	0.105	−0.196
UPDRS total	27.8	7–49	0.012	0.155	−0.397	0.036	−0.381	0.119	0.692	0.821	0.928	0.032
LED (mg/day)	938	425–1849	0.109	0.366	−0.203	−0.284	0.088	−0.035	−0.163	0.223	−0.103	0.461	0.043

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. .