Medical timeline checklist: 12 checks before you trust the picture
Short version: check the rows first (dates, duplicates, undated pages), then the drawing (true-date axis, same-day events, span ends, color), then the trail back to the record (a page cite on every mark, exports that keep it). Tick the boxes below while you look at a tool's output; the score updates as you go. Under 10 of 12, keep the table as your working copy.
Limits: Tool facts come from each vendor's own website, read 2026-11-12; we have not used those products. The case on this site is synthetic, with no real patient.
Why a timeline needs its own checks
A table that's wrong looks wrong when you read it closely. A timeline that's wrong still looks clean. The eye trusts spacing, color and length before it reads a label, which is the strength of the format and its risk. These checks are about the ways a drawn timeline misleads. They apply to a vendor's view, to a figure you export, and to 1 you draw yourself.
Run them on a closed file you already know, or on the synthetic case, where the answers are known. Tool-by-tool output types are on the tools page.
The 12 checks
How to score a tool in 30 minutes
- Pick a closed file you know. 300 to 1,000 pages, with at least 1 known gap, 1 duplicate, 1 late-signed note and 1 undated page. Note where each is before you start.
- Run it and open the timeline view. If the tool has no drawn view, export the table and draw it with the template, then score the export.
- Go down the 12 checks. Use your known items for checks 2, 3, 4 and 6. Print a page for check 9.
- Write down the misses. A miss on checks 1, 4 or 5 is a reason not to use the picture at all. Other misses are workable if you know about them.
What the score means
| Score | What to do |
|---|---|
| 12 of 12 | Use the timeline for orientation and the cited table for every fact you write down. |
| 10 or 11 | Usable if the misses aren't checks 1, 4 or 5. Note the known weakness in your working file. |
| Under 10 | Work from the table. Draw your own figure from it if you need one. |
| Fails 1, 4 or 5 | Don't rely on the picture, whatever the total: it can't be traced, it hides pages, or it hides time. |
This checklist covers the picture. Whether the AI read the records correctly in the first place (missed findings, wrong laterality, merged patients) is a separate check on the rows; a timeline only redraws what the rows say.