Code Review Rework Survivorship Study

Key stats

• 10 authoritative HTTPS sources
• 16 preregistered protocol stages
• 0 completed client-outcome claims

Research question and boundary

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 1, research question and boundary, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-01 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 1 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Population and observation window

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 2, population and observation window, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-02 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 2 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Source hierarchy and provenance

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 3, source hierarchy and provenance, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-03 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 3 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Unit of analysis

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 4, unit of analysis, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-04 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 4 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Sampling and exclusions

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 5, sampling and exclusions, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-05 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 5 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Independent classification

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 6, independent classification, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-06 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 6 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Adverse and negative controls

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 7, adverse and negative controls, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-07 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 7 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Missingness analysis

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 8, missingness analysis, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-08 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 8 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Timeline reconstruction

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 9, timeline reconstruction, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-09 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 9 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Alternative explanations

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 10, alternative explanations, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-10 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 10 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Sensitivity analysis

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 11, sensitivity analysis, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-11 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 11 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Authority and access boundary

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 12, authority and access boundary, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-12 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 12 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Privacy and retention

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 13, privacy and retention, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-13 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 13 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Reperformance test

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 14, reperformance test, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-14 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 14 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Corrective-action mapping

Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 15, corrective-action mapping, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-15 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 15 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Limitations and refresh rule

Limitations. Code Review Rework Survivorship Study asks whether rework metrics omit abandoned, superseded, reverted, or never-merged review cycles. Stage 16, limitations and refresh rule, declares one proposed change across revisions, review comments, decisions, supersession, merge or closure, later rollback, and retained rationale as the observation unit and freezes population, system boundaries, local and UTC times, source versions, inclusion rules, exclusions, and intended decision before outcomes are reviewed. Record DO-R-1013-16 distinguishes system events, engineering interpretations, owner decisions, implementation evidence, and unresolved hypotheses. This prospective protocol reports no completed client outcomes and defines no universal performance benchmark.

At stage 16 for Code Review Rework Survivorship Study, include routine, missing-source, wrong-identity, conflicting-version, late-arriving, inaccessible-system, unavailable-owner, reversed, corrected, reverted, and reopened cases. Two reviewers classify a stratified subset independently using written anchors, preserve first-pass disagreement, and adjudicate against retained evidence. Report numerator, denominator, exclusions, null values, age bands, correction rate, disagreement, and residual cases together. Alternative explanations include configuration, case mix, cache state, clock drift, synchronization, sampling, ownership changes, release versions, seasonality, and selection effects. The ten public sources guide control design but do not inspect this system, establish causation, certify a provider, or authorize deployment. Preserve protocol, queries, codebook, fixtures, sample receipt, chronology, reviewer notes, decision log, approved action, verification, limitations, and refresh trigger so another authorized engineer can reproduce the bounded result without retaining secrets or unnecessary production data.

Evidence table

Good distributed work is observable at the handoff: the result, evidence, limitations, and next owner are explicit.

Frequently asked questions

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Freeze the decision, population, versions, and owners before collecting outcomes.

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