What do systematic reviews say?

Verbal fluency (measured at 12 months of · patients with mild cognitive impairment

Depression (measured at 12 months of · patients with mild cognitive impairment

Functional performance (measured at 12 months of · patients with mild cognitive impairment

Episodic memory ( · patients with mild cognitive impairment

Speed of processing ( · patients with mild cognitive impairment

Executive functioning ( · patients with mild cognitive impairment

Working memory ( · patients with mild cognitive impairment

Verbal fluency ( · patients with mild cognitive impairment

Quality of life (3 months of · patients with mild cognitive impairment

Global cognitive functioning (measured at 12 months of · patients with mild cognitive impairment

Episodic memory (measured at 12 months of · patients with mild cognitive impairment

Change in a global measure of cognition (composite) · people with mild to moderate dementia

Change in disease progression · people with mild to moderate dementia

Change in delayed memory · people with mild to moderate dementia

Change in capacity for activities of daily living · people with mild to moderate dementia

Mood · people with mild to moderate dementia

Change in mood and well‐being (caregiver) · people with mild to moderate dementia

Change in a global measure of cognition (composite) · people with mild to moderate dementia

Change in delayed memory · people with mild to moderate dementia

Mood · people with mild to moderate dementia