Table 1.

Characteristics of caregiver status

	Odds ratio	95% confidence interval	multivariate odds ratio	95% confidence interval
Hypertension	1.65	1.04–2.64	1.86	1.03–3.37
Exercise	0.38	0.24–0.61	0.44	0.25–0.78
Yearly health checkup experiences	0.23	0.13–0.42	0.26	0.13–0.54
Health/old age-related stress	2.62	1.58–4.34	2.53	1.37–4.67
Carbohydrate energy ratio	1.06	1.02–1.11	1.05	0.997–1.110
PSQI score	1.21	1.11–1.31	1.15	1.05–1.26
Relaxing recreation	0.86	0.79–0.93	0.88	0.79–0.97

Multivariate: logistic regression analysis

Dependent variable: caregiver status (0: no; 1: yes)

Explanatory variable: hypertension (0: no; 1: yes), profession (0: no; 1: yes), exercise (0: no; 1: yes), subjective health condition (0: healthy; 1: not healthy), yearly health checkup experiences (0: no; 1: yes), health/old age-related stress (0: no; 1: yes), depressive state (0: no; 1: yes), carbohydrate energy ratio, PSQI score, relaxing recreation