The median engineer receives 1 review before merging a PR
  • The median PR is merged after one review, and the median active developer also receives one review before merging their PR.
  • Larger companies = more reviews: the median active developer at large companies (100+ committers) merges their PRs after two reviews
  • Larger PRs = more reviews: median PRs exceeding 200 lines modified receive 2 reviews before merging. Moreover, median PRs exceeding 200 lines modified at large companies receive 3 reviews before merging.
  • We’d previously noted that company size influences the median developers’ time to merge. One reason seems to be that developers at larger companies receive more reviews per PR prior to merging compared to developers at smaller companies. (Of course, no review PRs merge the fastest)

Median reviews a developer receives before merging, by company size

Even when normalizing for company size, we see that larger PRs are more likely to undergo more reviews before merging.

Median reviews a developer receives before merging, by company size

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