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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

240 questions in 36 reviews · Dementia and Cognitive Improvement

current versions
No studies 240 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Vitamin E (capsules 2000 IU/day in two divided doses) vs placebo
Activities of daily living Mean change from baseline using the ADCS Mild Cognitive Impairment Activities of Daily Living Scale from: 0 to 53 · people with mild cognitive impairment
Vitamin E for Alzheimer's dementia and mild cognitive impairment (2017) · Cochrane
no estimate extractedNRNo studies
Rosiglitazone plus metformin vs glibenclamide (glyburide) plus metformin
Global cognitive function · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Rosiglitazone plus metformin vs glibenclamide (glyburide) plus metformin
Incidence of MCI · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Rosiglitazone plus metformin vs glibenclamide (glyburide) plus metformin
Incidence of dementia · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Rosiglitazone plus metformin vs glibenclamide (glyburide) plus metformin
Adverse events (Hypoglycaemia) · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Rosiglitazone plus metformin vs glibenclamide (glyburide) plus metformin
Mortality · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide (glyburide) vs Repaglinide
Incidence of MCI · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide (glyburide) vs Repaglinide
Incidence of dementia · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide (glyburide) vs Repaglinide
Adverse events (Hypoglycaemia) · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Glibenclamide (glyburide) vs Repaglinide
Mortality · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Intensive glycaemic control vs standard glycaemic control
Incidence of MCI · patients with Type 2 diabetes
Effect of the treatment of Type 2 diabetes mellitus on the development of cognitive impairment and dementia (2017) · Cochrane
no estimate extractedNRNo studies
Prophylactic cholinesterase inhibitor vs placebo
Return to independent living ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Prophylactic cholinesterase inhibitor vs placebo
Inpatient mortality ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Return to independent living ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Inpatient mortality ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Return to independent living ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Bispectral index (BIS)‐guided anaesthesia vs BIS‐blinded anaesthesia/clinical judgement
Duration of delirium ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Bispectral index (BIS)‐guided anaesthesia vs BIS‐blinded anaesthesia/clinical judgement
Severity of delirium ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Bispectral index (BIS)‐guided anaesthesia vs BIS‐blinded anaesthesia/clinical judgement
Return to independent living ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Bispectral index (BIS)‐guided anaesthesia vs BIS‐blinded anaesthesia/clinical judgement
In‐hospital mortality ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Prophylactic cholinesterase inhibitor vs placebo
Duration of delirium ‐ not measured
Interventions for preventing delirium in hospitalised non‐ICU patients (2016) · Cochrane
no estimate extractedNRNo studies
Omega‐3 PUFA supplements vs placebo
Memory ‐ not measured · people with mild to moderate Alzheimer's disease
Omega‐3 fatty acids for the treatment of dementia (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Incident dementia ‐ not measured · adults with cognitive impairment/dementia and cognitively intact populations
Antihypertensive withdrawal for the prevention of cognitive decline (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Falls ‐ not measured · adults with cognitive impairment/dementia and cognitively intact populations
Antihypertensive withdrawal for the prevention of cognitive decline (2016) · Cochrane
no estimate extractedNRNo studies
Respite care vs no respite care
Rate of institutionalisation · patients with people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs polarity therapy
Physical health of people with dementia ‐ not reported · people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs polarity therapy
Quality of life of people with dementia ‐ not reported · people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs polarity therapy
Caregiver burden ‐ not reported · people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs no respite care
Mortality of people with dementia ‐ not reported · patients with people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs no respite care
Physical health of people with dementia ‐ not reported · patients with people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs no respite care
Quality of life of people with dementia ‐ not reported · patients with people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs no respite care
Caregiver quality of life ‐ not reported · patients with people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs polarity therapy
Rate of institutionalisation ‐ not reported · people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Respite care vs polarity therapy
Mortality of people with dementia ‐ not reported · people with dementia and their carers
Respite care for people with dementia and their carers (2014) · Cochrane
no estimate extractedNRNo studies
Cognitive rehabilitation vs control
Change in rates of admission to residential care-not measured · participants with early‐stage Alzheimer's disease and vascular dementia
Cognitive training and cognitive rehabilitation for mild to moderate Alzheimer's disease and vascular dementia (2013) · Cochrane
no estimate extractedNRNo studies
Cognitive rehabilitation vs control
Change in measures of dementia severity-not measured · participants with early‐stage Alzheimer's disease and vascular dementia
Cognitive training and cognitive rehabilitation for mild to moderate Alzheimer's disease and vascular dementia (2013) · Cochrane
no estimate extractedNRNo studies
Cognitive training vs control
Change in rates of admission to residential care-not measured · participants with early‐stage Alzheimer's disease and vascular dementia
Cognitive training and cognitive rehabilitation for mild to moderate Alzheimer's disease and vascular dementia (2013) · Cochrane
no estimate extractedNRNo studies
Cognitive training vs control
Change in measures of dementia severity-not measured · participants with early‐stage Alzheimer's disease and vascular dementia
Cognitive training and cognitive rehabilitation for mild to moderate Alzheimer's disease and vascular dementia (2013) · Cochrane
no estimate extractedNRNo studies
Cognitive rehabilitation vs control
Change in a global measure of cognition-not measured · participants with early‐stage Alzheimer's disease and vascular dementia
Cognitive training and cognitive rehabilitation for mild to moderate Alzheimer's disease and vascular dementia (2013) · Cochrane
no estimate extractedNRNo studies
procaine vs placebo
overall changes from baseline in "healthy persons7 ‐ not measured · "healthy" old persons and demented women
Procaine treatments for cognition and dementia (2008) · Cochrane
no estimate extractedNRNo studies