From: Rotavirus vaccine clinical trials: a cross-sectional analysis of clinical trials registries
Phase | Number | Per cent |
---|---|---|
Phase 1 | 23 | 9.50 |
Phase 1/phase 2 | 8 | 3.31 |
Phase 2 | 23 | 9.50 |
Phase 2/phase 3 | 2 | 0.83 |
Phase 3 | 80 | 33.06 |
Phase 4 | 27 | 11.15 |
Not applicable | 39 | 16.12 |
Not indicated | 40 | 16.53 |
Grand total | 242 | 100.00 |