Characteristics of depression studies
| Study | Symptom of mental health disorder | Physical health condition | Intervention | Interventionist | Type of study | Intervention location/practical accommodations for physical illness | Participant n (% female) | Age of participants M years (SD) | Time points for measures/follow-up | Global quality rating | Country |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Martinović et al32 | Subthreshold depression | Epilepsy | CBT vs TAU (counselling) | Qualified therapists | Randomised controlled trial | Outpatient epilepsy department | 15+15 (60) | BCI group: 17·2 (2·5)· TAU:17·6 (2·2) | Preintervention and postintervention 9-month follow-up | Strong | Serbia and Montenegro |
| McGrady and Hood33 | Subthreshold depression | Diabetes | CBT | Psychology postdoctoral fellow/doctoral students | Pre-post | Same hospital that participants received diabetes care assessments | 9 (33) | 15·77 (1·44) | Preintervention and postintervention | Strong | USA |
| Rosselló and Jiménez-Chafey34 | Depression | Diabetes | Group CBT | Doctoral level psychologists | Pre-post | Unclear | 11 (82) | 14·1 (1·3) | Preintervention and postintervention | Moderate | Puerto Rico |
| Szigethy et al35; Szigethy et al36 | Depression | Inflammatory bowel disease | Individual CBT plus family sessions | Psychiatrist trained in intervention | Pre-post | Most sessions in outpatient office.· Telephone sessions/covered two sessions at once if session missed. Sessions also given during medical procedures/hospitalisations | 11 (64) | 14·8 (1·7) | Preintervention and postintervention 6-month and 12-month follow-ups | Strong | USA |
| Szigethy et al37; Thompson et al38 | Subthreshold depression | Inflammatory bowel disease | CBT vs TAU plus depression information leaflet | Six trained therapists (child and adolescent psychiatrists, child and adolescent psychologists, clinical social workers) | Randomised controlled trial | Maximum of three sessions over the telephone. Face-to-face visits coordinated with medical visits/hospitalisations where possible | 22 (54·5)+19 (control; 47·5) | PASCET: 14·95 (2·33) TAU: 15·02 (1·83) | Preintervention and postintervention 9-month and 12-month follow-ups | Strong | USA |
CBI, cognitive behavioural intervention; PASCET, Primary and Secondary Control Enhancement Training; TAU, treatment as usual.