Performance of copying design variable

Study group

Mean ± SD

Control group

Mean ± SD

p-value

(within groups)

Pre-treatment

22.80 ± 2.65

23.20 ± 2.14

0.6531

Post-treatment

21.47 ± 2.42

23.07 ± 2.05

0.0606

Improvement %

5.83%

0.6%

0.0001

p-value (within groups)

0.0001

0.3343