# Contributing evidence to MENA Open Data & Evidence Lab

The Lab welcomes source material that can strengthen, correct or extend its public evidence infrastructure.

We are especially interested in:

- archived official statistical releases that are no longer easy to find;
- earlier vintages of economic indicators;
- methodology notes, rebasing notices and classification changes;
- documented survey redesigns;
- revision notices;
- examples where two official numbers appear comparable but are not;
- reproducible corrections to a Lab release;
- independent reproductions of Lab datasets, software or research notes.

## What to send

A useful contribution should include as much of the following as possible:

1. country / institution;
2. indicator or research object;
3. source title;
4. source URL or archived copy;
5. publication or release date;
6. reference period;
7. the specific value, definition or method change you think matters;
8. why you think it changes interpretation, comparability or reproducibility;
9. any licensing or redistribution constraint you know about.

You do not need to classify the case yourself.

## What happens next

A submission is a lead, not automatically a Lab finding.

Before entering a public registry or research note, material is checked against the relevant first-party source where possible. The Lab then records the statistical object, version, provenance, transformation or method change, claim boundary and review status.

If the evidence cannot support the proposed interpretation, the Lab may preserve the source without publishing the stronger claim.

## Corrections

Corrections are encouraged. Please identify:

- the release or record;
- the exact field, sentence or result you believe is wrong;
- the evidence supporting the correction;
- whether the issue affects a numerical result, source identity, method classification or interpretation.

Material corrections should be versioned publicly rather than silently overwritten.

## Independent reproduction

If you reproduce a Lab output, please report:

- release/version reproduced;
- operating system and relevant package versions;
- whether the reproduction was exact, approximate or failed;
- any deviation required to run the analysis;
- output differences;
- code or logs where possible.

A failed reproduction is useful evidence and will not be treated as adversarial by default.

## Current priority requests

For the first MENA Statistical Memory and Method Change Registry releases, the Lab is particularly seeking:

- pre-revision national-accounts releases from Saudi Arabia, Jordan and Morocco;
- official historical labour-market releases from Morocco before EMO2026;
- formal method-change notices from national statistical offices across the MENA region;
- researchers willing to independently verify 5–10 registry records.

## Contact

menaevidencelab@gmail.com

Please use a subject such as:

`Evidence contribution — [country] — [indicator]`

or

`Reproduction report — [release/version]`