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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