Table 1.

Scope of the core outcome set

Core outcome set scope	n (%)
Health area
Anaesthesia and pain control	1 (1)
Blood disorders	1 (1)
Cancer	9 (12)
Cancer/child health	1 (1)
Child health	1 (1)
Child health/ ear, nose and throat	1 (1)
Child health/gastroenterology	1 (1)
Ear, nose and throat	4 (5)*
Endocrine and metabolic	3 (4)
Eyes and vision	1 (1)
Gastroenterology	6 (8)
Healthcare of older people	2 (3)
Heart and circulation	3 (4)
Heart and circulation and skin	3 (4)*
Kidney disease	2 (3)
Lungs and airways	2 (3)
Mental health	1 (1)
Neonatal care	1 (1)
Neurology	4 (5)†
Neurology/eyes and vision	1 (1)
Orthopaedics and trauma	6 (8)
Other	2 (3)
Overweight/obesity	1 (1)
Pregnancy and childbirth	11 (14)‡
Rehabilitation	1 (1)
Rehabilitation and rheumatology	1 (1)
Rheumatology	2 (3)
Skin	4 (5)
Tobacco, drugs and alcohol dependence	1 (1)
Adults/children
Adults	45 (58)
Both adults and children	18 (23)
Children	11 (14)
Not reported	4 (5)
Gender
Male only	2 (3)
Female only	8 (10)
Both	68 (87)
Intervention
Any	49 (63)
Drug	4 (5)
Psychological	3 (4)
Surgery	7 (9)
Other§	15 (19)
Countries (all participants)
1 only	11 (19)
2–10	14 (24)
11–10	8 (14)
20–30	13 (22)
>30	13 (22)
Not reported/unclear	19

*Includes articles reporting three COS studies.

†Includes articles reporting two COS studies.

‡Includes two articles reporting two COS studies.

§Other: active surveillance anaesthetic techniques; behavioural; chemoradiotherapy; extracorporeal membrane oxygenation (ECMO); gene therapy; haemodialysis; healthcare transition; interdisciplinary multimodal pain therapy; medication review; physical activity intervention; prepregnancy care; procedure (induction of labour); rehabilitation; sound-based interventions; and visual screening/assessment.