Table 2.

Data extraction variables

Variable	Additional details
Study inclusion/exclusion	If excluded, rationale provided
Design and setting
Dates	Study duration
N, number of groups, and dropout rates
Participant demographics	This will include baseline cognitive status and activity or fitness level, diagnosis, disease severity, co-morbidities, Apo-E status, age, sex, nationality and/or ethnicity, socioeconomic status, and education
Included caregiver or caretaker
Recruitment approach
Adherence reported according to how intervention was recorded	For example, supervised, unsupervised, objective monitors, etc.
Follow-up assessment
Outcomes	To include cognitive, emotional, functional, motor, physiological, social, or quality of life
Reported challenges and conflicts
Bias assessment variables	To include randomization method, randomization concealment, blinding, method of reporting outcomes, missing information, and other relevant variables
Outcome description	To include scale range; minimal detectable change; and/or minimal clinically important difference; incidence of dementia; time to conversion; changes in health, cognitive, or quality of life variables; and changes in dementia related biomarkers
Other outcome factors	To include time to follow-up in study methodology, scale range, minimal detectable change, and/or minimal clinically important difference
Results: included participant group sizes, summary of results	For example, means, SD, and statistical changes
Physical activity/exercise treatment prescription data
Physical activity/exercise modality	For example, type, group, peer/coach, and additional motivators
Treatment minutes/session
Treatment duration	Total number of weeks
Supervised or unsupervised treatment paradigm
Harm or side effects	Drug or secondary health condition interaction