Badiu Nation Research Project
Y-Chromosome Lineage Variation Across Cabo Verde
Data version: 2026-09-13
Article: https://www.badiunation.page/essays/ydna-island-weighting

FILES
aggregate-data.json contains the counts in article Table 2 and the scenario
weights in Table 1. Each counts array follows the order in categories.
calculate.mjs recalculates the frequencies and grouped results.
badiu-nation-ydna.pdf is the accompanying article.
Archived article: https://doi.org/10.5281/zenodo.22745204
Correspondence: research@badiunation.page

RUN
Save calculate.mjs and aggregate-data.json in the same folder.
Using Node.js, run: node calculate.mjs
The script prints the results as JSON. It does not send data anywhere.

METHOD
Island frequency = category count / island sample size.
Pooled frequency = total category count / 1,257.
Scenario-weighted frequency = sum of (island weight * island frequency).
Multiply frequencies by 100 for percentages. Calculate differences before
rounding; display percentages and differences to two decimal places.
The combined category is A1a + E1a + E1b1a + E2b.
The all-A-and-E subtotal overlaps other groups; do not sum overlapping rows.

SCOPE
Island means the reported birthplace of the paternal grandfather, not current
residence. Data represent 1,257 participants across nine island categories.
The weights describe a specified scenario, not verified census weights.
Zero is an observed sample count, not proof of absence from a population.
These categories do not measure genome-wide or continental ancestry shares.
No individual genetic records are included. No downstream subclades are inferred.
The article describes recruitment, laboratory methods, and classification.

CREDIT
The public aggregate dataset (aggregate-data.json) is licensed under Creative
Commons Attribution 4.0 International (CC BY 4.0):
https://creativecommons.org/licenses/by/4.0/
You may share and adapt the dataset, including commercially, with appropriate
credit, a link to the licence, and an indication of any changes. This licence
does not cover private participant records, consent documents, or individual
genetic profiles. It does not establish a licence for other accompanying files.

Djassi, A., Landim, T., & Mendes, D. (2026). Y-Chromosome Lineage Variation Across
Cabo Verde: Island-Level Frequencies and the Effect of Weighting. Zenodo.
https://doi.org/10.5281/zenodo.22745204
For republication or reuse enquiries: https://www.badiunation.page/about#contact