RCTs per year
RCTs per year (cumulative)
Multicentre RCTs per year (cumulative)
Children randomized per year (cumulative)
RCTs per country
RCTs per country (detail)
RCTs per country per decade
Children randomized per country per decade
RCTs per country
| Country | RCTs |
|---|---|
| United States | 157 |
| India | 85 |
| China | 59 |
| Brazil | 36 |
| Egypt | 31 |
| Iran | 26 |
| Turkey | 25 |
| Canada | 23 |
| United Kingdom | 22 |
| Australia | 21 |
| The Netherlands | 20 |
| Spain | 15 |
| Germany | 14 |
| Italy | 14 |
| Thailand | 14 |
| Japan | 9 |
| France | 7 |
| Argentina | 6 |
| Belgium | 5 |
| Chile | 5 |
| Greece | 5 |
| Indonesia | 4 |
| Russia | 4 |
| Saudi Arabia | 4 |
| Switzerland | 4 |
| Vietnam | 4 |
| Austria | 3 |
| Israel | 3 |
| South Africa | 3 |
| Croatia | 2 |
| Cuba | 2 |
| Finland | 2 |
| Pakistan | 2 |
| South Korea | 2 |
| Bangladesh | 1 |
| Colombia | 1 |
| Malaysia | 1 |
| New Zealand | 1 |
| Philippines | 1 |
| Poland | 1 |
| Portugal | 1 |
| Sweden | 1 |
| Taiwan | 1 |
| Tunisa | 1 |
| Ukraine | 1 |
Sample size over time
Sample size over time
Contact Mark Duffett (duffett@hhsc.ca or mark.duffett@gmail.com) for more information. Data after 2022 is not comprehensive.
See https://dx.doi.org/10.1186/cc13083 for methods and more information.