Engineers at smaller companies are more likely to skip code review

Index

In companies with ≤ 5 code committers, over 50% of all PRs are merged without any code review. That percentage drops dramatically as we look at larger companies: < 10% in 50+ committer companies and < 5% in 200+ committer companies.

% of PRs merged without review, by company size

Moreover, when we look at currently large companies and tracked their rate of code review over time, we see that as the same companies grow larger, fewer PRs are merged without review.

As noted previously, the single biggest factor on a PR’s time to merge is the number of reviews it receives. PRs without reviews are the fastest to merge.
- PRs without reviews take, on median, 8 minutes to merge. The more reviews, the more time elapses before the median PR is merged.

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