Table 3: Correlation coefficient matrix among five question items in the “Motor function” category.
No. 9 No. 10 No. 11 No. 12 No. 13
No. 9 1.0000 0.1382 0.0231 0.0731 0.0515
No. 10 0.1382 1.0000 0.0019 0.1004 0.1149
No. 11 0.0231 0.0019 1.0000 0.0183 0.0478
No. 12 0.0731 0.1004 0.0183 1.0000 0.2643
No. 13 0.0515 0.1149 0.0478 0.2643 1.0000