Combined effect of daily physical activity and social relationships on sleep disorder among older adults: cross-sectional and longitudinal study based on data from the Kasama study

Table 4 Hazard ratios for sleep disorder by each group

Variables			No. of sample	No. of person-years	No. of sleep disorder	Hazard ratio (95% CI)
Variables			No. of sample	No. of person-years	No. of sleep disorder	Unadjusted		Model 1
Physical activity		Social relationship
low (0–115 pts)	&	low (2–17 pts)	106	417	38 (35.8%)	1.000	(Ref)	1.000	(Ref)
low (0–115 pts)	&	high (18–30 pts)	66	280	18 (26.1%)	0.648	(0.369–1.140)	0.675	(0.379–1.202)
high (116–425 pts)	&	low (1–17 pts)	69	258	19 (28.8%)	0.772	(0.445–1.340)	0.803	(0.458–1.407)
high (116–462 pts)	&	high (18–30 pts)	110	328	21 (19.1%)	0.595	(0.349–1.015)	0.564	(0.327–0.974)

Note: sleep disorder means PSQI global score > 5 points; 95% CI, 95% confidence interval; pts., points; Ref, reference; Model 1, adjusted for age, sex, BMI, take medication of hypertension, sleeping pills, had a smoking and drinking habit, and depressive syndrome

ISSN: 1471-2318