WhatsApp-based Psycho-socio-educational Intervention (WeLove) for Prevention of Psychological and Sleep Problems in Pregnant Women and Their Partners: A Three-arm Double-blinded Pilot Randomised Controlled Trial

Objectives: (1) evaluate the feasibility and acceptability of the WhatsApp-based psycho-socio-educational intervention (WeLove); (2) preliminarily examine the effects of the intervention on psychological symptoms (depression, anxiety, stress symptoms), sleep quality, and life satisfaction; and (3) preliminarily examine the interdependence between psychological symptoms and sleep quality in pregnant women and their partners. Methods: The investigators will use WhatsApp to provide the six sessions of the intervention, which include psychological, social, and educational components. A three-arm double-blinded pilot randomised controlled trial (RCT) is used in 60 couples, followed by individual face-to-face interviews for process evaluation in 10 to 20 couples based on data saturation. Participants will be assigned to one of three groups and 20 couples per group: intervention 1 (couples for WeLove), intervention 2 (pregnant women for WeLove), or the control group (use WhatsApp as normal). Participants will be assessed pre- and post-intervention. Generalised estimating equation analysis and thematic analysis will be performed to examine the research objectives.