Table 3.

Identification and measurement of costs

Cost components	Description of resources used	Unit of measure	Source, level data collected
Intervention delivery costs
Set-up costs	Hiring costs, training and materials	Total costs	Study’s accounting data
1. In-reach clinics	Paediatrician, GP, mental health specialist, etc	Minutes	Primary care data (EMIS), patient
2. Lunch-and-learn sessions	Paediatrician, GP, other child health professionals, clerks/administrative, etc	Minutes	Service caseloads, service
3. Specialist nurse-led services	CYPHP nurses, mental health specialists, etc.	Minutes	Primary care data, patient
	Phone usage.	Minutes/text messages	Interview CYPHP nurse, service
	Travel to patients (distance and mileage).	Minutes and £	Primary care data and interview CYPHP nurse, service
	Children’s centre.	Rent	Study’s accounting data, service
4. Population health management	Population health clinician, analyst, manager	Minutes	Study’s accounting data, service
5. Specialist team training	CYPHP nurses, primary care, secondary care staff, etc.	Minutes	CYPHP nurse’s caseload notes, service
	School staff.	Minutes
6. Multidisciplinary team case planning	CYPHP nurses, primary care, secondary care staff, etc	Minutes	CYPHP nurse’s caseload notes, service
Overhead costs	Using spaces, data access and storage	£	Study’s accounting data
Service use	GP.	Number of visits	Primary care data and secondary care activity, patient
	Paediatrician.	Number of visits
	Hospital outpatient.	Number of visits
	Hospital inpatient.	Number of visits
	Accident and emergency.	Number of visits
	Social care services.*	Referral (yes/no)
CYP and family	Time away from school	Hours	Study questionnaires, patient
	Time away from work	Hours	Study questionnaires, parent

*CYPHP nurses may refer CYP and their families to social care services. An indicator for referrals to social services is available in primary care data. Secondary care data (inpatient stays, A&E attendances and outpatient visits) will be obtained from Guy’s and Saint Thomas’ NHS Foundation Trust and King’s College Hospital data.

CYP, children and young people; CYPHP, Children and Young People’s Health Partnership; EMIS, Egton Medical information Systems; GP, general practitioner.