Table 2. Incidence of functional disability and mortality by characteristics of adults aged 65 years or older in Yamanashi, Japan (2003).

Variable (Number of missing data)	Baseline		Functional disability			Mortality
	n (%) or mean [SD]		No.	Person- years	Incidence rate	No.	Person- years	Incidence rate
Sex (0)
Female	267	(48)	46	1806.6	0.025	27	2002.5	0.013
Male	295	(52)	80	1913.6	0.042	68	2051.2	0.033
Age, y (0)
65–74	250	(44)	21	1772.9	0.012	19	1861.3	0.010
75+	312	(56)	105	1947.3	0.054	76	2192.4	0.035
Marital status (0)
Married	397	(71)	79	2648.8	0.030	65	2869.6	0.023
Not married	165	(29)	47	1071.4	0.044	30	1184.1	0.025
Household size (0)
1	51	(9)	7	332.4	0.021	5	375.9	0.013
2	208	(37)	40	1395.2	0.029	33	1508.7	0.022
3+	303	(54)	79	1992.6	0.040	57	2169.2	0.026
Average number of household members (0)	3.2	[1.8]	—	—	—	—	—	—
SF-36 (PCS) score (3)	51.1	[8.9]	—	—	—	—	—	—
Educational attainment (66)
Less than high school	210	(42)	53	1351.2	0.039	39	1501.3	0.026
High school or higher	286	(58)	57	1954.6	0.029	42	2085.2	0.020
Annual individual incomea (80) (Japanese yen)			—	—	—	—	—	—
Women	46.9	[14.5]
Men	136.5	[8.7]	—	—	—	—	—	—
Smoking (1)
Never	328	(58)	69	2183.2	0.032	47	2403.0	0.020
Ex-smoker	163	(29)	40	1081.3	0.037	33	1151.2	0.029
Current smoker	70	(12)	17	451.4	0.038	15	491.9	0.030
Alcohol consumption (g/day) (0)
None	283	(50)	72	1848.9	0.039	51	2042.6	0.025
0–20	66	(12)	22	414.2	0.053	19	445.8	0.043
21–40	121	(22)	21	806.8	0.026	18	870.7	0.021
41+	92	(16)	11	650.2	0.017	7	694.6	0.010
Exercise habit (1)
Yes	427	(76)	90	2867.1	0.031	69	3106.7	0.022
No	134	(24)	36	845.3	0.043	26	939.3	0.028

^aGeometric mean.