Table 4.

Comparison of non-motor symptoms between PD-pRBD and PD-NRBD.

Variable	PD-pRBD	PD-NRBD	P
	(n = 1,010)	(n = 1,430)
NMSS-1 score	1.31 ± 2.25	0.78 ± 1.70	<0.001*
NMSS-2 score	10.70 ± 7.33	7.83 ± 6.65	<0.001*
NMSS-3 score	8.40 ± 9.86	6.03 ± 8.62	<0.001*
NMSS-4 score	1.68 ± 3.24	0.68 ± 1.77	<0.001*
NMSS-5 score	4.56 ± 4.40	3.09 ± 3.67	<0.001*
NMSS-6 score	5.82 ± 4.81	3.50 ± 4.22	<0.001*
NMSS-7 score	7.22 ± 6.50	5.16 ± 5.82	<0.001*
NMSS-9 score	6.10 ± 5.00	4.79 ± 4.73	<0.001*
Cognitive dysfunction (with/without, n)	194/816	195/1,235	<0.001*
Orientation score	9.29 ± 1.32	9.50 ± 1.07	<0.001*
Registration score	2.74 ± 0.59	2.79 ± 0.52	0.022*
Attention and calculation score	3.56 ± 1.52	3.86 ± 1.44	<0.001*
Recall score	2.06 ± 1.04	2.14 ± 0.98	0.044*
Language score	7.96 ± 1.38	8.22 ± 1.19	<0.001*
PDSS score	107.40 ± 25.93	120.84 ± 23.67	<0.001*
EDS (with/without, n)	421/589	370/1,060	<0.001*
Constipation (with/without, n)	626/384	550/880	<0.001*
Hyposmia (with/without, n)	528/482	535/895	<0.001*
Depression (with/without, n)	409/601	349/1081	<0.001*

NMSS, non-motor symptom rating scale; PDSS, Parkinson's Disease Sleep Scale; EDS, excessive daytime sleepiness.

^*Statistically significant (p < 0.05).