Table 1.

ICD-10 dementia research diagnostic criteria used in the study (23).

DEMENTIA
G1. Evidence of each of the following:
(1) A decline in memory, which is most evident in the learning of new information, although in more severe cases, the recall of previously learned information may be also affected. The impairment applies to both verbal and non-verbal material. The decline should be objectively verified by obtaining a reliable history from an informant, supplemented, if possible, by neuropsychological tests or quantified cognitive assessments. For example, the individual has difficulty in registering, storing and recalling elements in daily living, such as where belongings have been put, social arrangements, or information recently imparted by family members.
(2) A decline in other cognitive abilities characterized by deterioration in judgement and thinking, such as planning and organizing, and in the general processing of information. Evidence for this should be obtained when possible from interviewing an informant, supplemented, if possible, by neuropsychological tests or quantified objective assessments. Deterioration from a previously higher level of performance should be established. Activities are increasingly restricted and poorly sustained.
G2. Preserved awareness of the environment [i.e., absence of clouding of consciousness (as defined in F05, criterion A)] during a period of time long enough to enable the unequivocal demonstration of G1.
G3 A decline in emotional control or motivation, or a change in social behavior, manifest as at least one of the following: (1) emotional lability; (2) irritability; (3) apathy; (4) coarsening of social behavior.
G4. For a confident clinical diagnosis, G1 should have been present for at least 6 months; if the period since the manifest onset is shorter, the diagnosis can only be tentative.
AD (F00)	VaD (F01)	MxD (F00.2)
A. The general criteria for dementia (G1 to G4) must be met. B. There is no evidence from the history, physical examination, or special investigations for any other possible cause of dementia (e.g., cerebrovascular disease, Parkinson's disease, Huntington's disease, normal pressure hydrocephalus), a systemic disorder (e.g., hypothyroidism, vit. B12 or folic acid deficiency, hypercalcaemia), or alcohol- or drug-abuse.	G1. The general criteria for dementia (G1 to G4) must be met. G2. Unequal distribution of deficits in higher cognitive functions, with some affected and others relatively spared. Thus memory may be quite markedly affected while thinking, reasoning and information processing may show only mild decline. G3. There is clinical evidence of focal brain damage, manifest as at least one of the following: (1) unilateral spastic weakness of the limbs; (2) unilaterally increased tendon reflexes; (3) an extensor plantar response; (4) pseudobulbar palsy. G4. There is evidence from the history, examination, or tests, of a significant cerebrovascular disease, which may reasonably be judged to be etiologically related to the dementia (e.g., a history of stroke; evidence of cerebral infarction).	A. All of the AD criteria, except from the absence of cerebrovascular disease met.B. VaD criteria met.