Table 3.

Results of multivariable logistic regression showing significant associations between poor sleep quality and family caregivers of people with dementia.

Cohabitating Caregivers versus Noncaregivers
	Model 1		Model 2		Model 3
	OR	95% CI	OR	95% CI	OR	95% CI
Poor sleep (PSQI > 5)	1.58	1.45–1.71	1.55	1.43–1.69	1.25	1.15–1.37
Noncohabitating Caregivers versus Noncaregivers
	Model 1		Model 2		Model 3
	OR	95% CI	OR	95% CI	OR	95% CI
Poor sleep (PSQI > 5)	1.15	1.10–1.20	1.22	1.16–1.28	1.15	1.10–1.21

Note: Model 1 was adjusted for sex, age, and body mass index. Model 2 was adjusted for Model 1 variables and socioeconomic variables (residence area, education level, marital status, employment status, and household income). Model 3 was adjusted for Model 2 variables and physical health-related variables (risky drinking, smoking, regular exercise, hypertension, and diabetes mellitus) and mental health-related variables (perceived status of health, perceived level of stress, subjective cognitive decline, and depression). CI, confidence interval; OR, odds ratio; PSQI, Pittsburgh Sleep Quality Index.