Table 2.
Distribution of common interests across the 170 @SafetyMD followers grouped into 12 clusters.
| Cluster | Followers, n | Common interests |
| 1 | 5 | Physician blogger, medical journalist |
| 2 | 101 | Driving school, drive training, driving safety, injury prevention, child health, pediatric physician |
| 3 | 15 | Moms, reporters, business owners |
| 4 | 5 | Spread of health-related information through social network |
| 5 | 4 | Could not be determined |
| 6 | 8 | Health research and health services, especially for driving safety |
| 7 | 5 | Could not be determined |
| 8 | 6 | Could not be determined |
| 9 | 6 | Physicians and medical research, especially child injury prevention |
| 10 | 7 | Medical education, driving education and training |
| 11 | 4 | Pediatricians and moms |
| 12 | 4 | Healthcare professionals, road safety professionals |