Table 2.

Association Between Sleep Quality and Probability of Prodromal PD

Sleep Quality	Recommended by China		Recommended by MDS
	Probability, % (β (95% CI))*	Increased probability (OR (95% CI)) *	Probability, % (β (95% CI)) *	Increased probability (OR (95% CI)) *
PSQI score	0.02 (0.01–0.03)	1.04 (1.02–1.05)	0.02 (0.01–0.03)	1.04 (1.02–1.06)
Good quality	0.00 (reference)	1.00 (reference)	0.00 (reference)	1.00 (reference)
Poor quality	0.07 (0.01–0.13)	1.19 (1.04–1.20)	0.07 (0.02–0.13)	1.21 (1.07–1.38)

Notes: *adjusting for age, sex, education level, physical activity, body mass index, fast plasma glucose, high- and low-density lipoprotein cholesterol, and hypertension.

Abbreviations: PSQI, Pittsburgh Sleep Quality Index; MDS, Movement Disorder Society; PD, Parkinson’s disease.