40% — 80% more bugs in production.
Eric Elliott

Can you please name the studies you refer to?

TDD is just a methodology of writing code, you can have coverage from unit tests, integration tests, regression tests and validation plan without following TDD. You can help yourself with static analysis, dynamic analysis and independent validation and verification. You don’t have to write tests first or in short cycle to have robust code. It’s just orthogonal.

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