Table 2.

Longitudinal association between sleep quality at baseline and risk of multimorbidity (N = 4683)

Number of physical conditions/ multimorbidity	OR (95% CI)
	Unadjusted	Model 1	Model 2	Model 3
2	1.36 (1.16, 1.59)	1.36 (1.17, 1.60)	1.37 (1.17, 1.60)	1.39 (1.19, 1.63)
3	1.54 (1.21, 1.96)	1.54 (1.20, 1.97)	1.54 (1.20, 1.97)	1.56 (1.23, 2.03)
≥ 4	2.17 (1.56, 3.03)	2.23 (1.59,3.13)	2.29 (1.63, 3.21)	2.36 (1.68, 3.33)
Overall (≥ 2)	1.48 (1.30, 1.69)	1.49 (1.30, 1.70)	1.50 (1.31, 1.71)	1.53 (1.33, 1.75)

Model 1 was adjusted for sex and age. Model 2 was adjusted for sex, age, education, residential region, and marital status. Model 3 was adjusted for sex, age, education, residential regions, marital status, type of residential address, body mass index, smoking status, alcohol consumption, and social participation