One common indicator of individual reviewer performance concerns responses to the journal’s reviewer invitations. If you choose to include this type of chart in your editorial report, you should note the number of invitations sent as well as the responses to those invitations. You can choose to report out how many reviewers agreed/declined/were uninvited/were terminated. You can also report how many reviewers completed reviews/declined after agreeing/were uninvited/were terminated. If you choose to report the number of completed reviews, be sure to also include the number of in-progress reviews, if any. Conversion rate charts, such as the number of reviewers who completed reviews compared to the number of reviewers who agreed to review are also very helpful. Read this blog post to learn more about “Reviewer Conversion Rate Charts”.
If your journal is trying to improve its regional diversity, you may want to report on the number of reviewer invitations by country. It might also be a good idea to report on the number of submissions by country as a reference point. As your submissions from different regions increase, your journal may want to recruit more expert reviewers from those regions as well, so that there are reviewers in your reviewer pool who have a better understanding of the topics of interest in that region. Be sure to color match the country colors between charts to make interpreting the relationships easier.
You may also want to report on reviewer performance, such as the mean (average) time taken for a reviewer to complete a review this year as compared to previous years or the total time with reviewers by year. The latter is often calculated from the time that the first reviewer accepts an invitation to review that manuscript until the last review is completed.
You should select editor and reviewer charts that either give information relating to your journal’s goals or to highlight areas of concern. Keep in mind who your audience is and what information they need to perform their roles related to the journal