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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)