Table 2.

Commonly used diagnostic tests for grading dementia and postoperative cognitive dysfunction

Diagnostic tests for grading dementia	Diagnostic tests for grading Postoperative Cognitive Dysfunction
Informant Questionnaire for Cognitive Decline in the Elderly	Trial making test: for visual attentiveness and task change
Recall component of the Consortium to Establish a Registry for	Letter-digit coding test: to analyze speed of data processing.
Alzheimer's Disease (CERAD)-Auditory Verbal Learning Test
Mini-Mental State Examination (MMSE)	Boston naming test: word finding capacity.
Instrumental Activities of Daily Living Questionnaire	Stroop-Word interference test: assesses interference responsiveness
The Geriatric Depression Score	Four boxes test: to assess psychomotor speed.
Nursing Delirium Screen Scale (Nu-DESC)	Paper and pencil memory scanning test: assess sensorimotor speed.
Confusion Assessment Method (CAM) or CAM-ICU	CERAD word list memory test.
Cognitive Failure Questionnaire (CFQ)	Visual verbal learning test: to test memory.