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Table 2 Working alliance in the two intervention groups: means, standard deviations, t test comparisons, and effect sizes.

From: The working alliance in a randomized controlled trial comparing online with face-to-face cognitive-behavioral therapy for depression

 

Sample means

   
 

Online (N= 25)

Face-to-Face (N= 28)

   

Scales

M

SD

n

M

SD

n

Test statistic

p

d

WAI-C mid-treatment

         

   Tasks

5.82

.80

25

5.48

1.05

28

1.304

.19

0.36

   Bond

5.68

.99

25

5.39

1.01

28

1.045

.30

0.29

   Goals

5.95

.81

25

5.81

1.01

28

.545

.59

0.15

   Composite

5.82

.78

25

5.56

.91

28

1.085

.28

0.31

WAI-C post-treatment

         

   Tasks

6.17

.80

25

5.66

1.18

27

1.811

.07

0.51

   Bond

5.91

.97

25

5.67

.95

28

.914

.36

0.25

   Goals

6.22

.79

25

5.98

1.01

28

.945

.35

0.26

   Composite

6.10

.77

25

5.76

.98

27

1.393

.16

0.39

WAI-T post-treatment

         

   Tasks

6.16

.60

25

5.66

.89

28

2.362

.02*

0.66

   Bond

5.86

.90

25

5.79

1.14

28

.265

.79

0.07

   Goals

6.11

.71

25

5.98

1.00

28

.533

.59

0.15

   Composite

6.04

.67

25

5.80

.96

28

1.013

.31

0.29

  1. WAI-C = Working Alliance Inventory - Clients' ratings; WAI-T = Working Alliance Inventory - Therapists' ratings; 1 df = 46, 2 df = 47, 3 df = 48, 4 df = 49, 5 df = 50.
  2. * p < .05.