Table 4 Total numbers of articles excluded listed by primary exclusion reason
| Â | Articles retrieved by searches | Articles from systematic map |
|---|---|---|
Exclusion reason | ||
 Exclude on population | 76 | 3 |
 Exclude on intervention | 165 | 2 |
 Exclude on comparator | 11 | 0 |
 Exclude on outcome | 129 | 58 |
 Exclude on abundance outcome | 90 | 58 |
 Exclude on study type | 34 | 0 |
 Exclude on climate zone | 160 | 0 |
 Exclude on language | 27 | 0 |
 Duplicate | 74 | 0 |
Total excluded at full text | 766 | 121 |