Table 4.

Odds Ratios (95% Confidence Interval) of Complaint on Memory Questionnaire Item Based Upon Overall Sleep Quality and Covariates

	Memory compliant items
	Person’s name	Telephone/zip codes	Objects	Specific facts	Purchasing items	Memory now vs. past
PSQI Global Score	1.05 (0.94–1.16)	1.03 (0.89–1.13)	1.12 (1.02–1.24)*	1.16 (1.04–1.30)**	1.07 (0.95–1.20)	1.10 (1.01–1.21)*
Covariates
Age	1.01 (0.97–1.04)	1.00 (0.96–1.03)	1.01 (0.97–1.04)	1.00 (0.96–1.03)	1.02 (0.98–1.06)	1.03 (0.99–1.06)
Sex	0.41 (0.21–0.78)**	0.54 (0.27–1.07)	1.11 (0.54–2.27)	0.47 (0.22–0.98)*	0.37 (0.18–0.75)**	0.82 (0.44–1.53)
Education	1.05 (0.94–1.17)	1.00 (0.89–1.12)	0.94 (0.84–1.05)	1.07 (0.94–1.21)	0.96 (0.85–1.08)	1.02 (0.93–1.13)
CES-D	0.94 (0.87–1.03)	1.00 (0.92–1.08)	0.97 (0.91–1.05)	0.99 (0.92–1.07)	0.94 (0.86–1.03)	0.99 (0.93–1.05)
LC	1.03 (1.00–1.06)*	1.02 (0.99–1.06)	1.04 (1.01–1.07)**	1.04 (1.00–1.07)*	1.04 (1.01–1.07)*	1.02 (0.99–1.05)
PSS	1.02 (0.97–1.07)	1.04 (0.99–1.10)	1.05 (1.00–1.10)	1.05 (1.00–1.11)	1.05 (1.00–1.11)	1.06 (1.01–1.10)*
MMSE	0.84 (0.76–0.93)**	0.89 (0.80–0.98)*	0.92 (0.84–1.02)	0.89 (0.79–0.99)*	0.87 (0.78–0.98)*	0.88 (0.80–0.96)**

Note: CES-D = Center for Epidemiological Studies Depression Scale; LC = Locus of Control Scale; PSS = Perceived Stress Scale; MMSE = Mini-Mental State Examination; PSQI = Pittsburgh Sleep Quality Index.

*p < .05. **p < .01.