Arango 2014.

Study characteristics
Methods	Study design: RCT Duration of study: not specified Country: Colombia Income classification: upper‐middle‐income country since 2008 Geographical scope: Cali Healthcare setting: community groups
Participants	1. Age: intervention 59.4 + 10.8, control 55.1 + 11.2 years 2. Gender: both 3. Socioeconomic background: most participants were in the higher bound of the income classification. 4. Educational background: not specified Inclusion criteria: Caregivers related to the person with dementia a. were the primary caregiver of that person; b. had been providing care for at least 3 months; c. were knowledgeable about the patient’s family and medical history; and d. had no self‐reported history of neurological and psychiatric disorders or learning disabilities. Exclusion criteria: none specified Note: considerations on baseline scores not applicable for this study Stated purpose: to examine the effectiveness of a group cognitive‐behavioural intervention in improving the mental health of dementia caregivers
Interventions	Name: coping with frustration Title/name of PW and number: local outreach workers (not specified) 1. Selection: not specified 2. Educational background: not specified 3. Training: not specified 4. Supervision: not specified 5. Incentives/remuneration: not specified Prevention type: selective prevention – participants were included based upon the presence of a risk factor (being caregivers of people affected by dementia with no history of psychiatric disorder). Intervention details: the goal of this 8‐week intervention is to introduce family caregivers to a variety of cognitive‐behavioural strategies that they can use to manage negative feelings (e.g. anger and frustration) that arise within the context of caregiving. These cognitive‐behavioural strategies and skills include relaxation, identification and challenging of dysfunctional thoughts, the use of positive self‐statements, and assertiveness, which are taught within a structured classroom format in small groups ranging in size from 6 to 10 participants. Control: active control – an educational programme of equal duration (8 weeks) and time commitment (2 hours/week) as the experimental group. This educational programme was designed by the authors to include an attentional and educational component but not the experimental intervention’s practical application of cognitive‐behavioural stress management skills.
Outcomes	Participants’outcomes of interest for this review Depressive symptoms – Patient Health Questionnaire 9 (PHQ‐9) Distress/PTSD symptoms – Zarit Burden Interview (ZBI) Quality of life – Satisfaction with life scale (SWLS) Carers’ outcomes of interest for this review Nil Economic outcomes Nil Time points: baseline, post‐intervention (< 1 month; 1 to 6 months) Note: data were not included in the meta‐analysis because they were not provided in the right format or were not available even after attempted author contact.
Notes	Source of funding: not specified Notes on validation of instruments (screening and outcomes): the selected outcomes were reported to have been validated for use in Spanish. Additional information: none Handling the data: not applicable Prospective trial registration number: not reported