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Table 3 Results of mediation model examining effect of the intervention (baseline to 3 months) on ASI-12 and mental health outcomes at 3 months

From: Effect of a physical activity and sleep m-health intervention on a composite activity-sleep behaviour score and mental health: a mediation analysis of two randomised controlled trials

Outcome

A (SE)

B (SE)

Direct (SE)

C (SE)

AB (SE)[95%CI]

Depressive Symptoms

2.99 (0.80)a

−0.10 (0.03)a

−0.25 (0.35)

− 0.56 (0.35)

−0.31 (0.12) [− 0.60,-0.11]

Anxiety Symptoms

3.01 (0.80)a

−0.04 (0.02)a

− 0.21 (0.22)

−0.32 (0.22)

− 0.11 (0.07) [− 0.27,-0.01]

Stress Symptoms

2.97 (0.80)a

− 0.12 (0.02)a

−0.26 (0.30)

− 0.63 (0.31)a

−0.37 (0.12) [− 0.65,-0.17]

QOL Physical Score

3.00 (0.80)a

0.02 (0.03)

0.28 (0.44)

0.36 (0.43)

0.07 (0.09) [−0.08,0.29]

QOL Mental Score

3.02 (0.80)a

0.17 (0.04)a

0.56 (0.57)

1.09 (0.57)

0.53 (0.20) [0.22,1.01]

Energy & Fatigue

3.01 (0.80)a

0.28 (0.07)a

1.15 (0.90)

2.00 (0.91)a

0.85 (0.33) [0.33,1.63]

  1. In all models a path adjusted for study (Synergy, REFRESH) and baseline value of mediator, b path adjusted for study (Synergy, REFRESH) and baseline value of mediator and outcome. a indicates p < 0.05