Table 3.

Hazard ratios for functional disability among the self-rated health groups excluding participants with sub-clinical and severe cases

	Self-rated health							P for trend
	Good	Rather good		Neither good nor poor		Poor
Functional disability excluded participants who were sub-clinical cases
Men (n = 4126)
Number of participants	1356	1899		605		266
Number of the cases (person-years/1000 person-years)	342 (2.52)	517 (3.82)		172 (1.19)		102 (1.50)
HR, 95% CI	1 (reference)	1.02	0.89, 1.17	1.05	0.87, 1.27	1.58	1.26, 1.98	0.001
Women (n = 6323)
Number of participants	1569	3166		1081		507
Number of cases (person-years/1000 person-years)	410 (3.10)	918 (6.83)		349 (2.52)		213 (1.50)
HR, 95% CI	1 (reference)	1.12	1.00, 1.26	1.25	1.08, 1.44	1.71	1.45, 2.02	< 0.001
Functional disability in severe cases
Men (n = 4333)
Number of participants	1412	1990		635		296
Number of cases (person-years/1000 person-years)	258 (1.82)	401 (2.72)		129 (0.85)		84 (0.48)
HR, 95% CI	1 (reference)	1.03	0.85, 1.26	1.12	0.86, 1.46	1.71	1.26, 2.33	0.004
Women (n = 6627)
Number of participants	1624	3292		1143		568
Number of cases (person-years/1000 person-years)	254 (1.84)	510 (3.57)		211 (1.37)		139 (0.83)
HR, 95% CI	1 (reference)	0.98	0.85, 1.14	1.17	0.97, 1.40	1.62	1.31, 1.99	< 0.001

Abbreviations: CI confidence interval, HR hazard ratios

Cox regression analysis adjusted for the variables below

Men: diastolic blood pressure, non-high-density lipoprotein cholesterol, hemoglobin, glycosylated hemoglobin, estimated glomerular filtration rate, job status, marital status, alcohol drinking status, regular exercise habits, and sleep duration

Women: total cholesterol, non-high-density lipoprotein cholesterol, glycosylated hemoglobin, estimated glomerular filtration rate, job status, marital status, and regular exercise habits