Table 1.

Search history

	Medline	PsycINFO
	(1946 to February 2013)	(1806 to February 2013)
Key words	Alzheimer’s disease and Lewy body disease, or Lewy bodies	Alzheimer’s disease and dementia with Lewy bodies
Key words	Neuropsychology, or neuropsychological tests, or Cognition, or cognition disorders	Neuropsychology, or neuropsychological assessment, or neuropsychological assessment, or Cognition, or cognitive impairment, or
Key words	Disease progression, or longitudinal studies	Disease course, or disease prognosis, or longitudinal studies
Search results	70	97
Included			18