Table 1.

Search criteria and terms implemented in the PubMed and Web of Science databases from inception through October 2020, limited to English language peer-reviewed studies.

Key Inclusion Criteria	Search Terms Applied in PubMed
Cognitive aging and dementia outcome	Cognition[mesh] OR “Cognition Disorders”[mesh] OR cognitive function OR episodic memory OR executive function OR working memory OR “mini-mental state examination” OR aging[mesh] OR Alzheimer disease[mesh] OR dementia
	AND
Social environment exposure	(“social capital” OR “social class” OR social environment OR socioeconomic factors OR income inequality OR “neighborhood characteristics” OR “social context” OR “social milieu” OR norm OR culture OR “social integration” OR “social network”)
	AND
Observational/epidemiologic study	“surveys and questionnaires”[mesh] OR “linear models”[mesh] OR “logistic models”[mesh] OR “longitudinal studies”[mesh] OR “follow-up studies”[mesh]