Competence

Groups

p*

Treatment (n = 34)

Control (n = 30)

Pretest

Median

31.8

59.1

<0.001

Range

0 - 68.2

4.5 - 86.4

Posttest

Median

94.4

88.9

0.011

Range

78.6 - 100

66.7 - 100

Percent of pretest-posttest score enhancement

Median

214.5

63.12

<0.001

Range

40 - 2022.2

−8.25 - 1504.4