Table 3.

Cross‐referencing objectively measured rigidity against United Parkinson's Disease Rating Scale (UPDRS) scores using 1242 paired‐observations* in 79 patients

UPDRS item	Objectively measured rigidity on worse side (n = 1240 paired measurements)
	Flexor	Extensor
	P‐value	P‐value
Rigidity upper limb worse side	<0.0001	0.008
Rigidity upper limb better side	0.1	0.4
Rigidity neck	0.004	0.02
Pronation‐supination upper limb worse side	0.006	0.04
Pronation‐supination upper limb better side	<0.0001	0.97

^* UPDRS rating not applied, or applied by a different observer, on 27% of 1493 occasions when rigidity measured objectively.