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Socio-demographic features of the participants.
| Country | Gender | Age | Educational degree (%) | Region (%) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Male (%) | Mage (age range) | SD | High school | Bachelor | Master | Ph.D. | Urban | Sub-urban | |
| US (n = 110) | 59 | 36.8 (18–72) | 13.95 | 46.4 | 41.8 | 10 | 1.8 | 31.8 | 51.8 |
| CN (n = 70) | 49 | 29.4 (21–50) | 5.60 | 5.7 | 25.7 | 35.7 | 32.9 | 78.6 | 20 |
| Spain (n = 104) | 56 | 34.8 (18–62) | 9.30 | 5.7 | 34.7 | 22.1 | 1.9 | 69.2 | 26 |
