Table 3. Focus of the research question for publications utilising registry-based data in UTUC research.

Research purpose focus	Number
Epidemiology & diagnosis	43
Incidence	10
Risk factors & presentation	25
Diagnosis	8
Treatment & outcomes	89
Oncological outcomes	32
Survival outcomes	45
Treatment strategies	8
Safety	4
Renal function assessment	1
Cost-assessment	2
Prognostic nomograms	8
Quality of life	1
Total	144

UTUC, upper tract urothelial cancer.