Table 4.
Region | No of studies* |
---|---|
Western Europe | 97 |
High income North America | 20 |
East Asia | 16 |
North Africa and the Middle East | 18 |
Central Europe | 6 |
Tropical Latin America | 5 |
High income Asia Pacific | 4 |
Australasia | 3 |
Eastern Europe | 4 |
South Asia | 3 |
South East Asia | 1 |
Eastern sub-Saharan Africa | 1 |
The number of studies is higher than 159 because some studies reported data on many countries belonging to different regions.