Table 2.

Associations between hand function items and cognitive assessments

	Univariable linear regression analysis				Stepwise regression analysis
	B	95% CI	p value	adjusted R2	B	95% CI	p value adjusted R2
Grip strength (kg) (n = 97)							0.644
Education (years)	0.83	0.14 to 1.51	0.019	0.056
Age (years)	−0.66	−0.92 to −0.39	<0.001	0.196	−0.42	−0.62 to −0.21	<0.001
If female	−15.46	−18.54 to −12.36	<0.001	0.507	−13.32	−16.08 to −10.57	<0.001
If living alone	−9.14	−13.21 to −5.07	<0.001	0.164
MMSE	0.24	−0.33 to 0.80	0.407	0.003
10-word list recall	0.32	−0.17 to 0.82	0.197	0.007
CDT (if normal)	8.04	3.97 to 12.12	<0.001	0.130
TMTA (s)	−0.06	−0.11 to −0.01	0.032	0.037
TMTB (s)	−0.03	−0.05 to −0.01	0.016	0.050	−0.02	−0.04 to −0.01	0.001
Grooved Pegboard (s) (n = 90)						0.402
Education (years)	2.03	−6.69 to 2.63	0.388	−0.003
Age (years)	2.65	0.76 to 4.56	0.007	0.065	1.69	0.16 to 3.22	0.031
If female	19.84	−9.20 to 48.87	0.178	0.009
If living alone	12.04	−17.63 to 41.71	0.422	−0.004
MMSE	−4.34	−8.01 to −0.68	0.021	0.045
10-word list recall	−0.77	−4.05 to 2.51	0.642	−0.008
CDT (if normal)	−62.17	−88.47 to −35.87	<0.001	0.180
TMTA (s)	1.04	0.75 to 1.32	<0.001	0.352	0.76	0.46 to 1.08	<0.001
TMTB (s)	0.34	0.22 to 0.47	<0.001	0.236	0.17	0.04 to 0.30	0.010
Finger tapping (n) (n = 97)						0.429
Education (years)	0.86	0.12 to 1.60	0.024	0.051
Age (years)	−0.29	−0.60 to 0.01	0.059	0.027
If female	−11.88	−15.78 to −7.98	<0.001	0.270	−10.09	−13.98 to −6.20	<0.001
If living alone	−5.82	−10.33 to −1.31	0.012	0.055
MMSE	0.24	−0.35 to 0.82	0.428	−0.004
10-word list recall	0.11	−0.40 to 0.62	0.675	−0.009
CDT (if normal)	9.58	5.45 to 13.72	<0.001	0.174	5.46	0.81 to 10.12	0.022
TMTA (s)	−0.09	−0.14 to −0.04	0.001	0.105
TMTB (s)	−0.03	−0.05 to −0.01	0.007	0.065	−0.03	−0.05 to −0.01	0.018

B, unstandardized coefficient.