Table 3 Median number of days between first participant enrolment and registration for retrospectively registered studies in the four journals publishing the largest number of clinical trials
From: When are clinical trials registered? An analysis of prospective versus retrospective registration
| Journal | Median days to registration | Interquartile range |
|---|---|---|
| BMC Complementary and Alternative Medicine | 491 | 448 to 1172 |
| BMC Family Practice | 418.5 | 139.5 to 676.25 |
| BMC Pediatrics | 745 | 243 to 1273 |
| BMC Public Health | 321.5 | 148.5 to 1239.25 |