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Table 3 Two way ANOVA comparison between patient characteristics and supportive text messaging intervention on BDI score

From: Randomized controlled pilot trial of supportive text messages for patients with depression

Independent variables

Intervention group mean BDI (SD)

Control group mean BDI (SD)

Treatment interaction F

Treatment interaction p

Subgroup main effect F

Subgroup main effect p

Gender

Male

12.0 (6.7)

25.0 (13.0)

2.44

0.12

1.23

0.27

Female

23.4 (11.4)

24.8 (10.8)

Age

≤ 25

22.2 (11.4)

24.8 (10.2)

0.23

0.98

0.28

0.76

26–40

20.1 (12.2)

26.2 (11.4)

≥ 41

19.0 (14.0)

22.9 (13.3)

Formal educational level

Up to high school

24.8 (12.5)

25.3 (14.0)

0.69

0.41

1.2

0.28

College/University

15.9 (8.7)

24.6 (8.8)

Employment status

Employed

19.6 (11.9)

25.7 (11.2)

0.27

0.60

0.001

0.98

Not Employed

22.7 (11.4)

21.5 (13.5)

Relationship status

In a relationship

22.3 (12.2)

23.7 (10.8)

1.10

0.30

0.11

0.70

Not in a relationship

19.9 (11.4)

26.5 (12.6)

On chronic physical health medication

Yes

15.0 (8.8)

23.0 (13.1)

1.06

0.30

3.80

0.06

No

22.5 (12.0)

25.5 (11.2)

CBT/ Counselling sessions I

Had no CBT/counselling

19.7 (9.7)

(n = 19)

26.3 (12.7)

(n = 14)

0.09

0.80

0.01

0.92

Had at least one CBT/counselling session

22.5 (14.5)

(n = 12)

24.3 (11.9)

(n = 14)

CBT/Counselling sessions II

Had no CBT/counselling

19.7 (9.7)

(n = 19)

26.3 (12.7)

(n = 14)

0.33

0.70

0.69

0.51

Had one to three CBT/counselling sessions

27.3 (14.3)

(n = 7)

25.9 (12.8)

(n = 8)

Had four or more CBT/counselling sessions

15.8 (13.3)

(n = 5)

22.2 (11.5)

(n = 6)