Predicted

Group

Percentage correction

Observed

IO

CON

Step 1

IO

21

14

60

CON

10

25

71.4

Total percentage

65.7

Step 2

IO

25

10

71.4

CON

9

26

74.3

Total percentage

74.3

Step 3

IO

28

7

80

CON

7

27

77.1

Total percentage

78.6

Step 4

IO

28

7

80

CON

7

28

80

Total percentage

80

Step 5

IO

28

7

80

CON

8

27

77.1

Total percentage

78.6