Baseline

& the

1^st course

Baseline

& the

2^nd course

Baseline

& the 3^rd course

The 1^st course & the

2^ndcourse

The 1^st course & the

3^rd course

The 2^nd course

& the 3^rd course

No improvement

−1.414^b

−2.828^b

−2.858^b

−1.633^b

−1.279^b

−4.71^c

P value

0.157

0.005

0.004

0.102

0.201

0.637

Z value

Under controlled

−1.857^b

−6.607^b

−6.532^b

−5.427^b

−5.105^b

−0.200^c

P value

0.063

0.000

0.000

0.000

0.000

0.841

Z value