Table 3 Relationships of FAB with clinical parameter in PD

Age (years)

− 0.098

0.036

0.008

Gender (male/female)

−0.867

0.667

0.200

Symptom duration (years)

−0.028

0.183

0.880

UPDRS motor score

−0.012

0.029

0.686

Subtype (akinetic-rigid/tremor-dominant or mixed)

−0.551

0.595

0.358

Olfaction

−0.002

0.114

0.990

MIBG H/M ratio delay

−0.118

0.944

0.901

BP fall in head-up tilt-table test (HUT) (mmHg)

0.018

0.015

0.225

Norepinephrine at rest in supine position in HUT (μg/ml)

0.002

0.003

0.650

Nocturnal fall in BP in ABPM (%)

0.070

0.033

0.040

BP fall in postprandial hypotension (mmHg)

0.002

0.022

0.920

BP in supine hypertension (mmHg)

−0.043

0.014

0.004

Constipation

−0.199

0.701

0.778