Around the world, people have a pretty good sense of the life expectancy of their country’s inhabitants. When it comes to most other social statistics, they have no idea.

That’s the conclusion to be drawn from a study of public perception in 14 countries by Ipsos MORI, a U.K.-based market research firm. Ipsos polled over 11,000 residents in total about a range of social factors—from immigration to teen pregnancy to religious demographics. Here is the overall “Index of Ignorance,” from least to most informed:

1. Italy

2. U.S.

3. South Korea

4. Poland

5. Hungary

6. France

7. Canada

8. Belgium

9. Australia

10. Great Britain

11. Spain

12. Japan

13. Germany

14. Sweden

And here’s how each country stacked up on the individual issues. In the charts below, the “Guess” column represents the average of answers given by those polled. The “Difference” column represents the number of percentage points by which people missed the mark, on average. The “Actual Value” column is the actual statistic for each country.

The U.S. has the highest rate of teen pregnancy, which might be why the country overestimates it the most.

What Percentage of Girls Age 15-19 Give Birth Each Year?

Ipsos/Quartz

People were prone to overestimating the number of Muslims in their country, and underestimating the number of Christians.