Classes of drugs in paediatric drug trials
| Classes | No of trials | Proportion (%) |
| Antineoplastic agents | 254 | 18.3 |
| Anti-infectives | 156 | 11.2 |
| Vaccines | 154 | 11.1 |
| Anaesthetics and analgesics | 108 | 7.8 |
| Anticoagulants, anticoagulants and haematopoietic agents | 87 | 6.3 |
| Immunosuppressants and glucocorticoids | 81 | 5.8 |
| Asthma drugs | 50 | 3.6 |
| Antihypertensive and cardiotonic drugs | 46 | 3.3 |
| Dermatologicals | 42 | 3.0 |
| Vitamins, electrolyte solutions, nutrition and nutrient supplements | 36 | 2.6 |
| Antiepileptic drugs | 33 | 2.4 |
| Hormonal preparations | 29 | 2.1 |
| Diabetes medication | 28 | 2.0 |
| Antipsychotics | 26 | 1.9 |
| Drugs for pulmonary hypertension | 21 | 1.5 |
| Probiotic preparations | 20 | 1.4 |
| Ophthalmic drugs | 20 | 1.4 |
| Drugs for nerve injury repair and nervous system development | 20 | 1.4 |
| Others | 177 | 12.8 |
| Total | 1388 | 100.0 |