| Level I | Good quality evidence |
Systematic review of RCTs with consistent findings High quality individual RCT |
| Level II |
Limited quality patient orientated evidence |
Systematic review of lower quality studies or studies with inconsistent findings Low quality clinical trial Cohort studies Case-control studies |
| Level III | Other |
Consensus guidelines, extrapolations from bench research, usual practice, opinion, disease-oriented evidence (intermediate or physiologic outcomes only), or case series |
[3] Angiotensin II receptor blocker (e.g. Losartan): South African Renal Society Recommendations for the Early detection and management of CKDin South Africa. http://www.sa-renalsociety.org/guidelines
Angiotensin II receptor blocker (e.g. Losartan): The National Kidney Foundation Kidney Disease Outcomes Quality Initiative (KDOQI) Clinical Practice Guidelines for Chronic Kidney Disease: Evaluation, Classification, and Stratification PART 9. Approach to chronic kidney disease using these guidelines. https://www.kidney.org/professionals/guidelines
Angiotensin II receptor blocker (e.g. Losartan): South African Renal Society Guidelines for the Optimal Care of Patients on Chronic Dialysis in South Africa, revised 2011. http://www.sa-renalsociety.org/guidelines