Van Bogaert 2016.

Methods	RCT.
Participants	72 care home residents with a diagnosis of dementia according to the DSM‐V criteria and MMSE of 10‐24. Mean age: 83.75 years.
Interventions	Intervention: individual reminiscence based on the SolCos Model. Control: treatment as usual.
Outcomes	Cognitive: MMSE, Frontal Assessment Battery. Mood‐related outcomes: CSDD. Other: NPI.
Length and frequency of intervention	2 × 45‐minute sessions per week for 8 weeks.
Time points measured	Preintervention (week 0) and postintervention (week 9).
Number of participants who did not complete study	12/72 (16.66%).
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Participants were randomly selected into the intervention group or control group using sequentially numbered, opaque sealed envelope for each resident.
Allocation concealment (selection bias)	Low risk	A person not involved with the study divided the envelopes into 2 blinded boxes manually and randomly.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	A researcher who was not involved with any aspect of the intervention programme, collected the study participants' assessment scales and other data before and after the trial.
Incomplete outcome data (attrition bias) All outcomes	Low risk	12 withdrawals (7 from intervention group and 5 from control group) because of sudden illness leading to admission to hospital (1) or palliative care (1) and death (6), disruptive or aggressive behaviour during the sessions (2) and withdrawal of consent after baseline (2).
Selective reporting (reporting bias)	Low risk	All outcomes listed in the methods section and study protocol were reported. No evidence of selective outcome reporting.
Other bias	Low risk	n/a.
Availability of training and supervision Objective outcome measures	Low risk	1 researcher ran a training programme with 18 nursing home volunteers as facilitators. This researcher also provided support and advice to the facilitators throughout the intervention.
Availability of manual or protocol for intervention All outcomes	Low risk	The standardised individual reminiscence intervention was based on the SolCos model (Soltys 1994). A clear and standardised structure was reported in the paper.