Improving CommonGround, an Online Peer Support Intervention for People Living With Long-Term Physical Health Conditions and Subthreshold Depression: Theory of Change–Informed Qualitative Study

Hannah Grace Jones   ^{1, 2, 3} , BSc ;   Ciara Regan   ^{4 *} , BSc ;   Grace Lavelle   ^{1, 5} , PhD ;   Elly Aylwin-Foster   ¹ , BA ;   Alan Simpson   ^{4, 6} , PhD ;   Ewan Carr   ⁷ , PhD ;   Matthew Hotopf   ^{1 *} , PhD ;   Vanessa Lawrence   ^{4 *} , PhD

¹ Institute of Psychiatry, Psychology and Neuroscience, Department of Psychological Medicine, King's College London, London, England, United Kingdom

² Persistent Pain Research Group, Hopwood Centre for Neurobiology, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia

³ IIMPACT in Health, School of Allied Health and Human Performanc, Adelaide University, Adelaide, South Australia, Australia

⁴ Health Service and Population Research, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England, United Kingdom

⁵ CP-Life Research Centre, School of Physiotherapy, Royal College of Surgeons, Dublin, Ireland

⁶ Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care, King's College London, London, England, United Kingdom

⁷ Department of Biostatistics and Health Informatics, King's College London, London, England, United Kingdom

*these authors contributed equally