Willingness to become a donor at the beginning and at the end of the survey
| Positive at the start % (n) | Positive by the end % (n) | % Increase (95% CI) | OR (95% CI) | P value | |
| Female | 40.8% (513/1255) | 57.0% (716/1255) | +39.6% (28.6% to 51.5%) | 1.921 (1.640 to 2.252) | <0.00001 |
| Male | 39.4% (200/507) | 50.9% (258/507) | +29.0% (+12.4% to 48.0%) | 1.591 (1.240 to 2.040) | <0.001 |
| <18 years old | 22.0% (24/109) | 37.6% (41/109) | +70.8% (+11.3% to 162.1%) | 2.135 (1.176 to 3.876) | 0.01 |
| 18–30 years old | 38.4% (544/1417) | 54.6% (774/1417) | +42.3% (+31.2% to 54.3%) | 1.932 (1.663 to 2.244) | <0.00001 |
| 31–45 years old | 55.4% (92/166) | 61.4% (102/166) | +10.9% (−7.6% to +33.0%) | 1.282 (0.828 to 1.985) | 0.27 |
| 46–60 years old | 71.4% (45/63) | 77.8% (49/63) | +8.9% (−11.2% to +33.6%) | 1.400 (0.625 to 3.138) | 0.41 |
| Profession/studies unrelated to medical field | 36.2% (435/1201) | 52.5% (630/1201) | +44.8% (+32.1% to 58.8%) | 1.943 (1.650 to 2.288) | <0.0001 |
| Profession/studies related to medical field | 49.6% (282/568) | 61.1% (347/568) | +23.1% (+10.7% to 36.8%) | 1.592 (1.258 to 2.016) | <0.001 |
| Total | 40.6% (719/1769) | 55.2% (978/1769) | +36.0% (+26.8% to 45.9%) | 1.806 (1.580 to 2.063) | <0.00001 |
Percentile increase was calculated as: (final percentage−initial percentage)/initial percentage×100.