Section/topic	#	Checklist item	Location(s) reported
Information sources and methods
Database name	1	Name each individual database searched, stating the platform for each	PsycINFO
Multi-database searching	2	If databases were searched simultaneously on a single platform, state the name of the platform, listing all of the databases searched	N/A
Study registries	3	List any study registries searched	N/A
Online resources and browsing	4	Describe any online or print source purposefully searched or browsed (e.g., tables of contents, print conference proceedings, web sites), and how this was done	N/A
Citation searching	5	Indicate whether cited references or citing references were examined, and describe any methods used for locating cited/citing references (e.g., browsing reference lists, using a citation index, setting up email alerts for references citing included studies)	Cited references were examined for relevant work to be included in the review. Email alerts were also enabled for new studies referencing cited work
Contacts	6	Indicate whether additional studies or data were sought by contacting authors, experts, manufacturers, or others	Authors of previous work were contacted to request relevant articles
Other methods	7	Describe any additional information sources or search methods used	Previous reviews of social factors related to mania were examined for key empirical work to be included
Search strategies
Full search strategies	8	Include the search strategies for each database and information source, copied and pasted exactly as run	The following queries were performed within PsycINFO Primary search query: FIELD 1: Life events OR social support OR trauma OR violence OR family OR interpersonal OR environmental OR stress OR victimization OR expressed emotion OR marital satisfaction OR adversity OR life stress OR perceived criticism OR family interaction FIELD 2: Mania OR Manic We subsequently conducted a search using FIELD 1 and setting the second search query to “hypomania” OR “hypomanic”
Limits and restrictions	9	Specify that no limits were used, or describe any limits or restrictions applied to a search (e.g., date or time period, language, study design) and provide justification for their use	Search was restricted to longitudinal prospective human studies as this was the focus of our review
Search filters	10	Indicate whether published search filters were used (as originally designed or modified), and if so, cite the filter(s) used	N/A
Prior work	11	Indicate when search strategies from other literature reviews were adapted or reused for a substantive part or all of the search, citing the previous review(s)	Five review chapters were examined for integration with the present review [22–26]
Updates	12	Report the methods used to update the search(es) (e.g., rerunning searches, email alerts)	Searches were rerun biweekly and email updates were configured for new articles matching the specified search criteria
Dates of searches	13	For each search strategy, provide the date when the last search occurred	The last primary search occurred 12/28/21. Authors of previous work were contacted 11/11/2021
Peer review
Peer review	14	Describe any search peer review process	B. W. and an assistant reviewed all search results and then S. J. reviewed results. Any uncertainties were discussed between B. W. and S. J
Managing records
Total Records	15	Document the total number of records identified from each database and other information sources	8 articles were received from authors who previously published work on social factors in bipolar disorder. Our initial PsycINFO search for articles published in or after 2014 produced 440 records for mania and 37 for hypomania. 96 articles were identified preceding 2014 for both mania and hypomania. After manually removing records that did not use longitudinal methods or have direct relevance to social environmental predictors of mania, 53 articles were identified for more systematic review. After the more careful review, 30 articles were identified as longitudinally using social variables to predict mania parameters
Deduplication	16	Describe the processes and any software used to deduplicate records from multiple database searches and other information sources	As PsycINFO was the only database used, no deduplication was necessary