Table 2.

Exercise status of middle-aged and older adults stratified according to their cognitive function.

Category		Overall n (%)	Between n (%)	Within n (%)
Total	1	13,291 (62.0)	3,811 (88.9)	69.8
	2	3,827 (17.9)	2,044 (47.7)	37.5
	3	4,307 (20.1)	2,061 (48.1)	41.8
Normal (N = 3,341)	1	9,591 (59.7)	2,799 (87.2)	68.5
	2	3,129 (19.5)	1,626 (50.6)	38.5
	3	3,335 (20.8)	1,567 (48.8)	42.6
MCI (N = 694)	1	2,286 (67.9)	632 (93.9)	72.3
	2	466 (13.9)	279 (41.5)	33.4
	3	613 (18.2)	312 (46.4)	39.3
Dementia (N = 250)	1	857 (74.5)	223 (97.0)	76.9
	2	92 (8.0)	65 (28.3)	28.3
	3	201 (17.5)	101 (43.9)	39.8