Number of trial sites and patients by ISN region and representation index
| Region | Number of sites | Proportion of sites (%) | Dialysis patients 2010* | Proportion of global dialysis patients (%) | Representation index† |
| Eastern and Central Europe | 424 | 6.9 | 57 870 | 2.8 | 2.45 |
| Western Europe | 1658 | 26.9 | 249 671 | 12.2 | 2.20 |
| North America | 2748 | 44.5 | 443 139 | 21.6 | 2.06 |
| Russia and newly independent states | 143 | 2.3 | 33 830 | 1.7 | 1.36 |
| South-East Asia and Oceania | 161 | 2.6 | 86 529 | 4.2 | 0.62 |
| North-East Asia | 802 | 13.0 | 639 901 | 31.3 | 0.41 |
| Middle East | 82 | 1.3 | 103 124 | 5.0 | 0.27 |
| Latin America and the Caribbean | 122 | 2.0 | 274 205 | 13.4 | 0.15 |
| South Asia | 19 | 0.3 | 78 111 | 3.8 | 0.08 |
| Africa | 13 | 0.2 | 81 091 | 4.0 | 0.05 |
| Total | 6172 | 100.0 | 2 047 471 | 100.0 |
*Liyanage et al (2015).1
†Equals proportion of sites divided by the proportion of global dialysis patients. Note: Calculations were performed without the rounding displayed in the table.
ISN, International Society of Nephrology.