Table 3. Overview of studies by study phase and number of participants (study size).
| Phase | Study count | Percentage | 1st Qu. | # of participants: median (IQR)* | 3rd Qu. |
|---|---|---|---|---|---|
| N/A | 111 | 27.7 | 49.5 | 120 | 330 |
| Early Phase 1 | 7 | 1.7 | 10 | 10 | 40 |
| Phase 1 | 17 | 4.2 | 20 | 40 | 54 |
| Phase 1/Phase 2 | 23 | 5.7 | 20 | 72 | 190 |
| Phase 2 | 108 | 26.9 | 60 | 145 | 273.75 |
| Phase 2/Phase 3 | 34 | 8.5 | 108 | 269.5 | 433.5 |
| Phase 3 | 74 | 18.5 | 245 | 500 | 1215 |
| Phase 4 | 27 | 6.7 | 83 | 200 | 450 |
Note:
*
IQR is interquartile range (1st quartile [25th percentile] and 3rd quartile [75th percentile]).