Table 1 Explanatory variables used in the meta-analysis
Variable | Mean value | Min | Max |
|---|---|---|---|
WTP (relative variation) | 0.46 | −0.92 | 0.98 |
Olive Origin certification | 0.30 | 0 | 1 |
Brand | 0.10 | 0 | 1 |
Neutral taste | 0.15 | 0 | 1 |
Traceability | 0.07 | 0 | 1 |
Organic Certification | 0.12 | 0 | 1 |
Peer-reviewed article | 0.60 | 0 | 1 |
Italy-based survey | 0.30 | 0 | 1 |