Source (searched 31 July 2011, 2 October 2014, and then 29 April 2015, 5 April 2016, 6 April 2017)	Search strategy		Hits retrieved
1. ALOIS (www.medicine.ox.ac.uk/alois) [Date of most recent search: 6 April 2017]	Keyword search: reminiscence OR RT		July 2011: 40 Oct 2014: April 2015: 3 April 2016: 2 April 2017: 0
2. MEDLINE In‐process and other non‐indexed citations and MEDLINE 1946‐present (OvidSP) [Date of most recent search: 6 April 2017]	1. reminisc*.ti,ab. 2. RT.mp. and (dement* or alzheimer* or lewy or VCI).ti,ab. [mp=protocol supplementary concept, rare disease supplementary concept, title, original title, abstract, name of substance word, subject heading word, unique identifier] 3. 1 or 2 4. randomized controlled trial.pt. 5. controlled clinical trial.pt. 6. randomized.ab. 7. placebo.ab. 8. randomly.ab. 9. trial.ab. 10. groups.ab. 11. or/4‐10 12. 3 and 11 13. (animals not (humans and animals)).sh. 14. 12 not 13		July 2011: 234 Oct 2014: 228 April 2015: 73 April 2016: 64 April 2017: 75
3. Embase 1980‐ 5 April 2017 (OvidSP) [Date of most recent search: 6 April 2017]	1. reminisc*.ti,ab. 2. (RT and (dement* or alzheimer* or lewy or VCI or "cognit* impair*")).ti,ab. 3. or/1‐2 4. randomly.ab. 5. trial.ti,ab. 6. RCT.ti,ab. 7. ("single‐blind*" or "double‐blind*").ti,ab. 8. clinical trial/ 9. groups.ab. 10. or/4‐9 11. 3 and 10 12. limit 11 to human		July 2011: 221 Oct 2014: 354 April 2015: 158 April 2016: 115 April 2017: 98
4. PsycINFO 1806‐April 2017 (OvidSP) [Date of most recent search: 6 April 2017]	1. reminisc*.ti,ab. 2. (RT and (dement* or alzheimer* or lewy or VCI or "cognit* impair*")).ti,ab. 3. or/1‐2 4. randomly.ab. 5. groups.ab. 6. trial.ti,ab. 7. ("double‐blind*" or "single‐blind*").ti,ab. 8. Clinical Trials/ 9. RCT.ti,ab. 10. placebo.ab. 11. (randomised or randomized).ti,ab. 12. or/4‐11 13. 3 and 12		July 2011: 183 Oct 2014: 123 April 2015: 43 April 2016: 41 April 2017: 39
5. CINAHL (EBSCOhost) [Date of most recent search: 6 April 2017]	S1 (MH "Reminiscence Therapy")  S2 TX reminisc* S3 TX RT AND dement* S4 TX RT AND alzheimer* S5 TX RT AND lewy  S6 TX RT AND "cognit* impair*"  S7 S1 or S2 or S3 or S4 or S5 or S6  S8 TX random* S9 TX RCT OR CCT  S10 (MH "Clinical Trials")  S11 AB groups  S12 TX "double‐blind*" OR "single‐blind*"  S13 AB placebo* S14 S8 or S9 or S10 or S11 or S12 or S13  S15 S7 and S14  S16 EM 2004  S17 EM 2005 S18 EM 2006 S19 EM 2007 S20 EM 2008 S21 EM 2009 S22 EM 2010 S23 EM 2011 S24 S16 or S17 or S18 or S19 or S20 or S21 or S22 or S23  S25 S15 and S24		July 2011: 201 Oct 2014: 102 April 2015: 32 April 2016: 34 April 2017: 46
6. ISI Web of Science ‐ all databases [includes: Web of Science (1945‐present); BIOSIS Previews (1926‐present); MEDLINE (1950‐present); Journal Citation Reports] [Date of most recent search: 6 April 2017]	Topic=(reminiscence therapy) AND Topic=(dementia* OR alzheimer*) AND Year Published=(2004‐2011) AND Topic=(random* OR trial OR RCT OR groups OR "double‐blind*" OR "single‐blind*")		July 2011: 50 Oct 2014: 40 April 2015: 42 April 2016: 22 April 2017: 38
7. LILACS (BIREME) [Date of most recent search: 6 April 2017]	Free form: reminiscence		July 2011: 7 Oct 2014: 12 April 2015: 0 April 2016: 0 April 2017: 13
8. CENTRAL (The Cochrane Library) (Issue 4 of 12, 2017) [Date of most recent search: 6 April 2017]	#1 reminisc* #2 RT AND (dement* OR AD OR alzheimer* OR lewy OR "cognit* impair*") #3 (#1 OR #2), from 2004 to 2017		July 2011: 128 Oct 2014: 118 April 2015: 40 April 2016: 0 April 2017: 48
9. ClinicalTrials.gov (www.clinicaltrials.gov) [Date of most recent search: 6 April 2017]	Interventional Studies | reminiscence		July 2011: 7 Oct 2014: 8 April 2015: 2 April 2016: April 2017: 6
10. ICTRP Search Portal (apps.who.int/trialsearch) [includes: Australian New Zealand Clinical Trials Registry; ClinicalTrilas.gov; ISRCTN; Chinese Clinical Trial Registry; Clinical Trials Registry – India; Clinical Research Information Service – Republic of Korea; German Clinical Trials Register; Iranian Registry of Clinical Trials; Japan Primary Registries Network; Pan African Clinical Trial Registry; Sri Lanka Clinical Trials Registry; The Netherlands National Trial Register] [Date of most recent search: 6 April 2017]	Keyword search: reminiscence		July 2011: 19 Oct 2014: 20 April 2015: 3 April 2016: April 2017: 7
PsycBITE [Date of most recent search: 6 April 2015]		Keyword: Reminiscence AND Method: RCT	July 2011: 11 April 2015: 0
TOTAL before deduplication			July 2011: 1101 Oct 2014: 1015 April 2015: 396 April 2016: April 2017: 370
TOTAL after deduplication and first assessment by CDCIG information specialists			July 2011: Oct 2014: 102 April 2015: 21 April 2016: 279 April 2017: 37