Country rankings
Stem Cell Research Trials by Country
Iran has the highest # of Trials (224), followed by United States (212) and South Korea (186). Hong Kong has the lowest (67).
# of TrialsBetter directionWhether a higher or a lower value is better. A green arrow means higher is better, a red arrow means lower is better, and no arrow means neither.More in the glossary →
14 of 235 countries# of Trials
Darker means higher. Click a place to highlight it.
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All 14 ranked
Highest first.
Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →
Each dot is one country; the lines mark the median and the middle half.
Median
125.5
Middle half 87.5 – 149.3
Average
127.9
14 countries
Highest
224
Iran
Lowest
67
Hong Kong
Data
Click a column to sort, a row to highlight that place on the charts.
14 countries · # = rank by # of Trials
| # | ||
|---|---|---|
| 1 | Iran | 224 |
| 2 | United States | 212 |
| 3 | South Korea | 186 |
| 4 | Australia | 154 |
| 5 | China | 135 |
| 6 | Spain | 134 |
| 7 | Israel | 126 |
| 8 | Germany | 125 |
| 9 | Canada | 100 |
| 10 | India | 89 |
| 11 | Malaysia | 87 |
| 12 | Panama | 79 |
| 13 | United Kingdom | 72 |
| 14 | Hong Kong | 67 |
What correlates with # of Trials?
Pearson r against 1,879 other country metrics sharing at least 10 countries. Ranks are read by standing: a better rank counts as higher, whether rank 1 is the best place on a list or the worst. Correlation is not causation.
Higher together
Places that have a higher # of Trials tend to score higher on these (or rank better)
Opposite directions
Places that have a higher # of Trials tend to score lower on these (or rank worse)
- Plot
- Climate Change Performance IndexClimate Change Performance Index by CountryPlotr = −0.67 · strong · n = 11
- Plot
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- Land & Resource Sustainability Rank (US News)Most Environmentally Friendly CountriesA rank: rank 1 is the bestPlotr = +0.63 · strong · n = 13
- Plot
Quick answers
- Which country has the highest # of Trials?
- Iran has the highest # of Trials, at 224, followed by United States (212) and South Korea (186).
- Which country has the lowest # of Trials?
- Hong Kong has the lowest # of Trials, at 67.
- What is the median # of Trials across countries?
- The median is 125.5 across the 14 countries with data.
- Where does this stem cell research trials by country data come from?
- Rankodex compiles it from World Population Review and the primary sources it cites: List of countries by stem cell research trials - Wiki; Registered Studies Over Time - Clinical Trials.













