Table 2.

Means, SDs and correlations among variables

Variable	2.	3.	4.	5.	6.	7.	M	SD
1. Age	−0.19	−0.11	−0.17	0.11	−0.14	−0.09	82.60	7.11
2. Gender		0.18	−0.02	−0.05	0.09	0.01	36F, 19M
3. Education			0.02	−0.01	0.16	0.08	15.27	1.72
4. Arthritis				−0.03	0.30*	0.20	3.35	1.00
5. Residence					0.09	0.25	44 H, 10 R
6. Grip strength (kg)						0.51***	9.00	7.42
7. Grip persistence (s)							10.51	7.81

All Pearson product moment correlation r unless specified otherwise.

*p<0.05, ***p<0.001.

M, mean.