Table 4. Categories and subcategories of active ingredients in the ‘contexts’ category.

CATEGORIES	SUBCATEGORIES
Setting The aggregate of place(s), things, surroundings and feelings that make up the situation of the activity
Environment The circumstances, objects, and conditions which make up the surroundings of the activity	Location
	Basic features
	Attractiveness
	Situation
	Time and day
	Access
	Privacy
Atmosphere The character, feeling, or mood of a place or situation where the activity takes place	Comfort
	Belonging
	Familiarity
	Ambiance
	Organisation
Project set-up The structure, processes and/or systems which surround the outward facing delivery of the activity
Economic resources Relating to economic resources connected to the activity and its delivery	Participant charges
	Project funding
	Fees
	Longevity
	Environmental sustainability
Management Relating to the person, people, group(s) or company(ies) in charge of organising the activity	People
	Affiliation
	Branding
	Collaboration
	Patient and Public Involvement
Pathway Relating to the partcipant(s') route into or out of the activity
Recruitment How participants find out about or are enrolled into the activity	Formal referral
	Informal referral
	Choice
	Advertising
Signposting and referral Signposting to services, resources, support, or advice beyond the activity itself	Inter-sector signposting
	Health-sector signposting
	Social signposting
	Other-sector signposting
	Safeguarding referral