Baseline characteristics
| Variable | Non-biodesign group (n=20) | Biodesign group (n=17) | P value |
| Age, year | 33.9±5.8 | 34.9±5.8 | 0.57 |
| Gender, male | 16 (80.0%) | 15 (88.2%) | 0.50 |
| Occupation | 0.21 | ||
| Medical background | 16 (80.0%) | 9 (52.9%) | |
| Doctor | 7 (35.0%) | 6 (35.3%) | |
| Dentist | 0 (0.0%) | 2 (11.8%) | |
| Co-medical provider | 9 (45.0%) | 1 (5.9%) | |
| Engineering background | 2 (10.0%) | 4 (23.5%) | |
| Business background | 2 (10.0%) | 4 (23.5%) |
Data are expressed as mean±SD or number (percentage).