Study	Reason for exclusion
Afonso 2009	Older population with no diagnosis of dementia.
Akhoondzadeh 2014	Healthy older adults and no control group.
Allen 2014	Not specific to dementia.
Asiret 2016	Not an RCT. Authors stated "Patients were listed through their mini mental test scores, and randomized as odd numbers to control group and even numbers to intervention group." This is allocation rather than randomisation.
Baillon 2004	Only 3 sessions of reminiscence therapy. No control group.
Baillon 2005	Only 3 sessions of reminiscence therapy. No control group.
Barban 2016	Reminiscence therapy combined with process‐based cognitive training.
Bogaert 2013	Inadequate generation of a randomised sequence meaning study was not an RCT.
Bohlmeijer 2008	Not specific to dementia.
Brooker 2000	Not an RCT.
Burckhardt 1987	Not an intervention study and not specific to reminiscence and dementia.
Chao 2006	An MMSE score < 24 was an exclusion criteria, i.e. population did not have a clear diagnosis of dementia.
Chenoweth 2009	Not reminiscence therapy.
Chiang 2010	MMSE score > 20 was necessary to be included in the study, i.e. population did not have a clear diagnosis of dementia.
Choy 2016	Participants did not have dementia.
Chueh 2014	No mention of diagnosis of dementia.
Chung 2009	Single group experimental design, i.e. not an RCT.
Crook 2016	Not an RCT.
Curto Prieto 2015	No passive control group.
Eritz 2016	Study used a life history intervention which was not carried out directly with the person with dementia
Gudex 2010	Residential home population that specifically excluded residents with severe dementia. No diagnostic information provided; no data given for people with dementia.
Haight 2003	Randomisation not mentioned
Haslam 2010	Comparison was against an activity (playing skittles) rather than no treatment/social contact.
Haslam 2014	No passive control condition.
Head 1990	No randomisation.
Hilgeman 2014	Mixed intervention, mostly focusing on advance care planning.
Hsu 2009	Population did not have a clear diagnosis of dementia.
Hutson 2014	Not sufficient reminiscence therapy content.
Jo 2015	Not an RCT.
Lalanne 2015	Control condition was a cognitive training programme.
Lancioni 2014	Feasibility study, not an RCT.
Lin 2011	Not an RCT.
Liu 2007	Excluded people with a diagnosis of dementia.
Lopes 2016	Inclusion criteria appeared to include people with MCI, according to cut‐off scores on Montreal Cognitive Assessment which is used to determine eligibility for the study. Data not available separately for participants meeting criteria for mild dementia. Less than 10% of participants had formal diagnosis of dementia.
MacKinlay 2009	Qualitative study.
Mackinlay 2010	Intervention was not reminiscence therapy.
McKee 2003	Reminiscence used with a general care home population. Data for people with dementia not presented separately.
McMurdo 2000	Residential home population with MMSE score >12; no diagnostic information provided; no data given for people with dementia.
Melendez‐Moral 2013	Not specific to dementia.
Morris 2015	No mention of dementia.
Nakamae 2014	Not sufficient reminiscence therapy content, correspondence with authors stated that participants engaged in 5 minutes of reminiscence per session.
Nakatsuka 2015	Only included participants with MCI.
Orten 1989	Population without clear diagnosis of dementia.
Politis 2004	Not enough reminiscence therapy content
Rattenbury 1989	Cognitive impairment was an exclusion factor for this study, i.e. population did not have a clear diagnosis of dementia.
Rawtaer 2015	Inclusion criteria include MMSE of ≥ 24, i.e. not a population with dementia.
Sabir 2016	People with dementia excluded.
Serrano 2004	Diagnosis of dementia was an exclusion factor.
Stinson 2006	Significant cognitive impairment was an exclusion factor for this study, i.e. population did not have a clear diagnosis of dementia.
Tadaka 2004	Study used the same participants and measures as the Tadaka 2007 (AD); Tadaka 2007 (VD) studies which were included in this review. The 2004 version was excluded to avoid double counting the same data in the analysis.
Tanaka 2017	Intervention includes reality orientation and physical exercise as well as reminiscence. Described as cognitive rehabilitation.
Thornton 1987	Not an intervention study.
Tolson 2012	Intervention was not reminiscence therapy.
Van Dijk 2012	Not enough reminiscence therapy (1 session only).
Wang 2004	Cognitive impairment was an exclusion factor for this study, i.e. population did not have a clear diagnosis of dementia.
Wang 2007	Inadequate generation of a randomised sequence meaning not an RCT.
Wang 2009	Inadequate generation of a randomised sequence meaning not an RCT.
Wingbermuehle 2014	Not an intervention study.
Wu 2016	Intervention described as spiritual reminiscence but the content does not reflect reminiscence work.
Yamagami 2007	Not an RCT.
Yasuda 2009	1 group, not an RCT.
Yousefi 2015	No mention of dementia in paper.
Zauszniewski 2004	A diagnosis of dementia was an exclusion factor for this study.

MCI: mild cognitive impairment; MMSE: Mini‐Mental State Examination; RCT: randomised controlled trial.