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Location of study site by WHO Region in the analysed randomized controlled trials included in seventeen systematic reviews of nutrition interventions to address obesity, 1978–2013 (n 213)
| Location | n | % |
|---|---|---|
| Africa | 1 | 0·5 |
| Americas | 126 | 59·1 |
| Europe | 60 | 28·1 |
| Eastern Mediterranean | 0 | 0·0 |
| South-East Asia | 1 | 0·5 |
| Western Pacific | 23 | 10·8 |
| Not clear | 2 | 0·9 |
| Total | 213 | 100·0 |
