Due to the worldwide rising prevalence of chronic kidney disease (CKD), there is a need to develop strategies through well-designed clinical studies to guide decision making and improve delivery of care to CKD patients. A cross-sectional survey was conducted based on the International Society of Nephrology Global Kidney Health Atlas data. For this study, the survey assessed the capacity of various countries and world regions in participating in and conducting kidney research. Availability of national funding for clinical trials was low (27%, n = 31), with the lowest figures obtained from Africa (7%, n = 2) and South Asia (0%), whereas high-income countries in North America and Europe had the highest participation in clinical trials. Overall, formal training to conduct clinical trials was inadequate for physicians (46%, n = 53) and even lower for nonphysicians, research assistants, and associates in clinical trials (34%, n = 39). There was also diminished availability of workforce and funding to conduct observational cohort studies in nephrology, and participation in highly specialized transplant trials was low in many regions. Overall, the availability of infrastructure (bio-banking and facilities for storage of clinical trial medications) was low, and it was lowest in low-income and lower-middle-income countries. Ethics approval for study conduct was mandatory in 91% (n = 106) of countries and regions, and 62% (n = 66) were reported to have institutional committees. Challenges with obtaining timely approval for a study were reported in 53% (n = 61) of regions but the challenges were similar across these regions. A potential limitation is the possibility of over-reporting or under-reporting due to social desirability bias. This study highlights some of the major challenges for participating in and conducting kidney research and offers suggestions for improving global kidney research.

The health workforce is the cornerstone of any health care system. An adequately trained and sufficiently staffed workforce is essential to reach universal health coverage. In particular, a nephrology workforce is critical to meet the growing worldwide burden of kidney disease. Despite some attempts, the global nephrology workforce and training capacity remains widely unknown. This multinational cross-sectional survey was part of the Global Kidney Health Atlas project, a new initiative administered by the International Society of Nephrology (ISN). The objective of this study was to address the existing global nephrology workforce and training capacity. The questionnaire was administered online, and all data were analyzed and presented by ISN regions and World Bank country classification. Overall, 125 United Nations member states responded to the entire survey, with 121 countries responding to survey questions pertaining to the nephrology workforce. The global nephrologist density was 8.83 per million population (PMP); high-income countries reported a nephrologist density of 28.52 PMP compared with 0.31 PMP in low-income countries. Similarly, the global nephrologist trainee density was 1.87 PMP; high-income countries reported a 30 times greater nephrology trainee density than low-income countries (6.03 PMP vs. 0.18 PMP). Countries reported a shortage in all care providers in nephrology. A nephrology training program existed in 79% of countries, ranging from 97% in high-income countries to 41% in low-income countries. In countries with a training program, the majority (86%) of programs were 2 to 4 years, and the most common training structure (56%) was following general internal medicine. We found significant variation in the global density of nephrologists and nephrology trainees and shortages in all care providers in nephrology; the gap was more prominent in low-income countries, particularly in African and South Asian ISN regions. These findings point to significant gaps in the current nephrology workforce and opportunities for countries and regions to develop and maintain a sustainable workforce.

Access to essential medications and health products is critical to effective management of kidney disease. Using data from the ISN Global Kidney Health Atlas multinational cross-sectional survey, global access of patients with kidney disease to essential medications and health products was examined. Overall, 125 countries participated, with 118 countries, composing 91.5% of the world's population, providing data on this domain. Most countries were unable to access eGFR and albuminuria in their primary care settings. Only one-third of low-income countries (LICs) were able to measure serum creatinine and none were able to access eGFR or quantify proteinuria. The ability to monitor diabetes mellitus through serum glucose and glycated hemoglobin measurements was suboptimal. Pathology services were rarely available in tertiary care in LICs (12%) and lower middle-income countries (45%). While acute and chronic hemodialysis services were available in almost all countries, acute and chronic peritoneal dialysis services were rarely available in LICs (18% and 29%, respectively). Kidney transplantation was available in 79% of countries overall and in 12% of LICs. While over one-half of all countries publicly funded RRT and kidney medications with or without copayment, this was less common in LICs and lower middle-income countries. In conclusion, this study demonstrated significant gaps in services for kidney care and funding that were most apparent in LICs and lower middle-income countries.