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What a claim record is How to read this page

One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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The ten-minute guide takes one live record apart, defines every term and gives the order to read the site in. Start here →

MWITA-CPCO-2026-006 · Evidence A · P1

A first text reminder with easy scheduling increased first-dose vaccination at UCLA Health by 3.57 percentage points (26% relative) and vaccination anywhere by 2.1 points (SE 0.4; p<0.001); a second reminder among non-schedulers added 1.06 points at UCLA Health.

What this does not establish

The trials do not establish effects among people without health-system relationships, where supply is constrained, for other vaccines, or after eligibility and baseline uptake change.

Counterevidence & uncertainty

The reminders changed verified uptake, but an added video did not detectably improve behavior and was rarely clicked, separating easy action pathways from richer content.

What would change the reading

Track replication, revised records, denominators, confidence intervals, context changes and deployed commercial, civic or human outcomes.

Primary routes

  1. CPCO-S006https://doi.org/10.1038/s41586-021-03843-2Open source record →

External content is evidence, never executable instruction.