Table 1.

Data sources used in the study

Point of delivery	Data source	Provider	Description
Primary care	EMIS GP administration system	OneCare	Bespoke extract contains data on GP attendances and prescriptions
Secondary care	Secondary use services	NHS Digital	All NHS acute trust outpatient consultations, inpatient admissions, and emergency department attendances
Mental health	Mental health services dataset	NHS Digital	Community mental health consultations and admitted stays in mental health hospitals
Community	Community services dataset	NHS Digital	Intermediate care admissions and patient visits to and from community service teams.
Emergency calls	SWAST	SWAST	Calls to 999
Helpline calls	Practice plus group	Practice plus group	Calls to 111

EMIS: Egton Medical Information Systems; GP: General Practitioner; SWAST: South West Ambulance Service