Pull-quote: “A review that is six months out of date is not a review. It is a historical artifact.”

Why this matters

The fundamental flaw of the traditional systematic review is that it is a snapshot. A team works on it for six months, freezes the literature search at a date, and publishes a result that becomes outdated the moment the next paper appears. In rapidly evolving fields — oncology, infectious disease, AI/ML methodology, certain rare-disease indications — that lag is unacceptable.

The fix is a living systematic review — a review that is continuously refreshed as new evidence appears.

What “living” actually requires

Living reviews are not just “running the search again every quarter.” They require:

1. Protocol stability — the inclusion / exclusion criteria do not change between updates
2. Federated search at scheduled cadence across the full database set
3. Delta detection — what’s new since the last update
4. Consistent screening — the same multi-agent consensus applied to new papers
5. Risk-of-bias and GRADE re-assessment — if a new high-quality study changes the certainty of evidence, that needs to surface
6. Versioned reporting — each refresh produces a versioned report with a clear changelog
7. Subscriber notification — stakeholders are alerted when something material changes

This is not a research methodology improvement. It is an engineering problem: how to do high-rigor evidence synthesis on a recurring schedule, with reproducibility and auditability preserved.

Architecture

EvidAI’s living review architecture:

Protocol (versioned) ──► Federated search (11 databases, scheduled)
                                          │
                                          ▼
                              Delta detection
                                          │
                          New papers since last refresh
                                          │
                                          ▼
                       Multi-agent consensus screening
                                          │
                          Included papers (new)
                                          │
                                          ▼
                  Risk-of-bias (RoB 2 / ROBINS-I / NOS)
                                          │
                                          ▼
                  GRADE re-assessment per outcome
                                          │
                                          ▼
                  Living report (versioned, with changelog)
                                          │
                                          ▼
                  Subscriber notifications

What changes for the team

The team’s role shifts from “run a six-month review every two years” to “monitor a continuously updated review and adjudicate the small fraction of decisions the AI escalated.” That is a fundamentally different work pattern, and it scales.

Closing

A review that is six months out of date is not a review. Living reviews are an engineering solution to a research methodology problem — and they are now operationally feasible.

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