Table S3. Effect of a Reviewing Editor serving as a reviewer on the number of rounds of revision.

We used a GLM with a log link function to model the number of revisions that a paper undergoes prior to a final decision as a function of whether a Reviewing Editor served as one of the reviewers (Editor_As_Reviewer), the number of unique reviewers, the decision type, and the number of days since eLife started accepting papers. The only variable that had a significant effect was the decision type, as papers that are rejected tend to be overwhelmingly rejected early on and thus undergo fewer rounds of revision.

	coef	std err	z	P>|z|	[95.0% Conf. Int.]
Intercept	0.6856	0.099	6.951	0.000	0.492 0.879
Editor_As_Reviewer[T.True]	-0.0134	0.033	-0.403	0.687	-0.078 0.052
C(Decision_Type)[T.Reject Full Submission]	-0.7762	0.035	-22.216	0.000	-0.845 -0.708
Publication_Since_Start	1.058e-05	5.33e-05	0.198	0.843	-9.4e-05 0.000
Unique_Reviewers	0.0382	0.031	1.230	0.219	-0.023 0.099