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General characteristics of included publications (n = 462)
| Number | Percentage | |
|---|---|---|
| Publication year | ||
| Up to 2000 | 9 | 2 |
| 2001–2010 | 105 | 23 |
| 2011–2020 | 348 | 75 |
| Publication type | ||
| Journal article | 459 | 99 |
| Grey literature report | 3 | 1 |
| Scope | ||
| Single-country analysis | 385 | 83 |
| Multi-country analysis | 77 | 17 |
| Multiple regions | 60 | 13 |
NB: For the year 2020, publications published until 20 August were included.
