Summary of findings 1. Summary of findings table (1).

Study ID	Country	Subjects at Baseline (n)	Mean Age (yrs)	IQCODE Version	Language	Dementia Diagnosis	Dementia prevalence at 1st follow‐up n/assessed (%) Timing	Dementia Prevalence at last follow‐up n/assessed (%) Timing	Other Assessments
Caratozzolo 2014	Italy	158	68.4 to 77.4	16‐item	Italian	DSM‐IV	28/114 (24.6) 3 months	37/105 (35.2) 12 months	BI; IADL; Itel‐MMSE
Henon 2001	France	202	≥ 40	26‐item	French	ICD‐10	26/99 (26.2) 6 months	11/69 (15.9) 3 years	MDRS, MADRS, MMSE
Krogseth 2011	Norway	266	82.7	16‐Item	Norwegian	DSM‐IV	10/82 (12.2) 6 months	*	CAM, MMSE, CDT, ADL

Abbreviations: ADL‐ Activities in Daily Living; BI‐ Barthel Index; CAM‐ Confusion Assessment Method; CDT‐ Clock Drawing Test; DSM‐ American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders; IADL‐ Instrumental Activities of Daily Living; ICD‐ International Classification of Disease; Itel‐MMSE‐ Italian version of MMSE; MADRS‐ Montgomery–Asberg Depression Rating Scale; MDRS‐ Mattis Dementia Rating Scale; MMSE‐ Mini‐Mental State Examination.

* only single time point of assessment