Table 1 After completing an initial attempt to find trials with sex differences based on an April 2022 data freeze, we carried out various quality control tests (Methods)

From: Outcome differences by sex in oncology clinical trials

Reason trial was missed

Number among 75 selected trials with enrollment ≥200

Number among 147 trials with enrollment [175, 199]

Paper exists but lacks any analysis by sex

38 (51%)

95 (65%)

Paper has subgroup analysis by sex but no comparison

17 (23%)

10 (7%)

No paper as of end of evaluation

10 (13%)

23 (16%)

Paper has non-significant comparison missed by Trialtrove

7 (9%)

17 (12%) with 2/17 papers published after data freeze.

Sex comparison in Trialtrove missed by our strategy, subsequently repaired

1 (1%)

0 (0%)

Paper has a significant SOR or SE sex comparison in main document missed by Trialtrove

1 (1%)

2 (1%)

  1. In one key test, we examined 75 larger trials likely to have a sex comparison that were missed by our search of the April 2022 data. In the middle column, we classified each trial into one of seven categories. The middle column may include papers curated by Trialtrove between the April and December 23, 2022 data freezes. The end of evaluation date for the right column was September 23, 2023. For the trials with no paper, Trialtrove curation could have found sex comparisons in meeting abstracts, without a peer-reviewed journal paper, but did not actually find any sex comparisons in abstracts.