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. Author manuscript; available in PMC: 2021 Jul 16.
Published in final edited form as: J Alzheimers Dis. 2021;82(1):47–57. doi: 10.3233/JAD-201129

Table 7.

Ranking of the top ten command and copy clocks variables comparing AD and VaD participants

Variable AD (n=29) VaD (n=27) t-value Df p-value
1. Average pressure (command) 21.57 (31.56) 84.98 (17.66) 9.3618 44.575 <0.0001*
AD<VaD
2. Average pressure (copy) 30.23 (29.89) 86.39 (19.99) 8.3175 49.15 <0.0001*
AD<VaD
3. Average pressure/velocity (copy) 1.26 (1.31) 5.48 (3.83) 5.438 31.606 <0.0001*
AD<VaD
4. Average pressure/velocity (command) 0.92 (1.28) 5.01 (2.93) 6.6897 34.974 <0.0001*
AD<VaD
5. Average digit height (command) 5.67 (1.47) 5.15 (1.33) −1.385 53.959 0.1718
ns
6. Total drawing time (copy) 14.36 (6.68) 20.73 (9.32) 2.922 46.872 0.0053
AD<VaD
7. Standard deviation of pressure (copy) 18.36 (7.18) 23.63 (4.27) 3.3576 46.153 0.0016*
AD<VaD
8. Clockface overshoot angle (command) 2.29 (1.50) 3.17 (3.05) 1.4703 40.065 0.1828
Ns
9. Hour hand distance from center (command) 5.85 (4.79) 7.25 (6.00) 0.9462 47.838 0.3488
Ns
10. Hour hand distance from center (copy) 3.37 (2.41) 4.63 (2.64) 1.861 52.598 0.0683
ns

mean and standard deviation;

*

signifies variables that remain significant after Bonferroni correction