. 2023 Sep 27;7:e47486. doi: 10.2196/47486

Table 2.

Phenotypic subgroups of Parkinson disease and specimen features identified in the Oxford Parkinson Disease Centre cohort [17].

Group	Frequency (%)	Tremor^a	Smell^a	Cognition^a
Mild motor and nonmotor disease	25.4	–2	–2	–2
Poor posture and cognition	23.3	–2	–2	+2
Severe tremor	20.8	+4	0	–1
Poor psychological well-being, RBD^b, and sleep	18.9	–2	+3	–2
Severe motor and nonmotor disease and poor psychological well-being	11.7	+2	+5	+5

^aA higher score represents a worsening effect.

^bRBD: REM sleep behavior disorder.