ean valuation for each hypothetical research scenario
| N | Minimum | Maximum (£) | Mean (£) | SD (£) | |
| Valuation of taking part in scenario 1 | 37 | Gratis | 10 | 2.84 | 4.004 |
| Aged 12+ | 24 | Gratis | 10 | 2.92 | 4.149 |
| Aged 8–12 | 13 | Gratis | 10 | 2.69 | 3.881 |
| Valuation of taking part in scenario 2 | 33 | Gratis | 75 | 13.18 | 15.753 |
| Aged 12+ | 24 | Gratis | 50 | 12.50 | 12.511 |
| Aged 8–12 | 9 | Gratis | 75 | 15.00 | 23.184 |