Razavi 2014.

Study characteristics
Patient sampling	Consecutive sample from memory clinic plus patients from a neurology clinic. Sample was 'enriched' with cognitively normal control patients. 33 patients with comorbid medical conditions that could potentially affect cognition but were not dementias were excluded.
Patient characteristics and setting	Mixed population from various referral pathways
Index tests	AD‐8
Target condition and reference standard(s)	The study states that it uses "published criteria" but does not further operationalise
Flow and timing	33 patients with comorbid medical conditions that could potentially affect cognition but were not dementias were excluded. The timing of clinical and informant assessment is not clear.
Comparative
Notes
Methodological quality
Item	Authors' judgement	Risk of bias	Applicability concerns
DOMAIN 1: Patient Selection
Was a consecutive or random sample of patients enrolled?	Yes
Was a case‐control design avoided?	Unclear
Did the study avoid inappropriate exclusions?	No
		High	High
DOMAIN 2: Index Test All tests
Were the index test results interpreted without knowledge of the results of the reference standard?	Yes
If a threshold was used, was it pre‐specified?	Yes
		Low	Low
DOMAIN 3: Reference Standard
Is the reference standards likely to correctly classify the target condition?	Unclear
Were the reference standard results interpreted without knowledge of the results of the index tests?	Yes
		Unclear	Low
DOMAIN 4: Flow and Timing
Was there an appropriate interval between index test and reference standard?	Unclear
Did all patients receive the same reference standard?	Yes
Were all patients included in the analysis?	No
		High