Abdiwahab Ali
Health data analyst · Doctoral researcher · Taipei
Research

Current research

Five active studies in obesity, diet and cancer epidemiology, alongside four published papers.

5active studies
4peer-reviewed papers
190+countries covered
35 yrsof trend data (1990-2024)
R·Stata·Pyanalysis stack

Publications & field research

Public record. Click through to the journals.

Obesity · 2026
Trends of obesity in early adulthood and later adulthood across 196 countries and territories, 1990-2022
doi:10.1002/oby.70290
Blood Cell Therapy · 2026
Return to work after hematopoietic stem cell transplantation: fatigue and organ-specific chronic graft-versus-host disease
coauthor · vol 9(3), pages 114-124
Public Health · 2026
Khat chewing and oral & esophageal cancer: systematic review and meta-analysis
doi:10.1016/j.puhe.2026.106177
ecancermedicalscience · 2025
Khat and upper digestive tract cancers in Hargeisa: a case-control study
doi:10.3332/ecancer.2025.1880
International Dental Journal · 2026
Field researcher (paid): caries and oral health-related quality of life among Somali schoolchildren in Hargeisa
fieldwork contribution · doi:10.1016/j.identj.2026.109766
University of Oslo · 2022
Field researcher (paid): dental health of 12-year-old children in Somaliland
fieldwork contribution · doi:10.1111/cdoe.12990

Active studies

Figures stay blurred while a study is in preparation, but four of these studies have a fully interactive recreation in the dashboard (click any unlocked card). For the published work, the real figures are in the open-access papers above.

STUDY 01in preparation

Child and adolescent obesity

Global trend analysis of obesity in children and adolescents, 1990 to 2024, stratified by sex and age band.

blurred figure
blurred figure
blurred figure
open the interactive figure →
AAPC trendsNCD-RisCR
STUDY 02in preparation

Global diet quality

Multi-country analysis of dietary trends across age groups, 1990 to 2018.

blurred figure
blurred figure
blurred figure
open the interactive figure →
diet indicestrend analysisR
STUDY 03in preparation

Obesity-related cancers

Cancer incidence and mortality trends in relation to obesity, by country and sex.

blurred figure
blurred figure
blurred figure
figures blurred until publication
joinpointGBDStataR
STUDY 04in preparation

Obesity in Africa

Trend analysis across the continent’s 54 countries and three age groups.

blurred figure
blurred figure
blurred figure
open the interactive figure →
AAPC trendsmapsR
STUDY 05published · 2026

Adult obesity

Obesity prevalence in early adulthood (20-49) and later adulthood (50+) across 196 countries and territories, 1990-2022, with segmented-regression trend estimates. Presented as a conference poster, now published in Obesity.

blurred figure
blurred figure
blurred figure
open the interactive figure →
read the paper, doi:10.1002/oby.70290
segmented regressionNCD-RisCR
STUDY 06under review

Scoping review: NCDs in East Africa

Evidence mapping of non-communicable disease research in East Africa.

blurred figure
figures blurred until publication
PRISMA-ScRevidence mapping

What I’ve built

Beyond the studies above, I built the software that runs them.

Founder & developer
Covexe covexe.com

One platform for the whole systematic review, from protocol to publication figures: planning, searching, screening, risk-of-bias appraisal, AI-assisted data extraction, meta-analysis and a full statistics suite, all in one browser. AI stays assistive: every extracted value cites the exact sentence it came from, and the statistics run on your own machine, so your data never leaves it.

40+methods checked against R
17+tools, search to synthesis
1browser, nothing to install
Meta-analysis & NMA PRISMA / CONSORT RoB2 · ROBINS-I · GRADE AI extraction, cited to source Client-side statistics
Free core, validated maths. The statistics, appraisal and reporting tools are free; a methods paper validating the engine against R (metafor, survival, MASS) is in preparation with faculty co-authors.

Methods & tools

The analytical stack behind the studies above and the dashboards I build.

Languages
RPythonStataSQL
Methods
Joinpoint regressionAAPC trend analysisMeta-analysisSystematic & scoping reviewSurvival analysisSensitivity analysisBiostatistics
Data & visualisation
ggplot2Interactive dashboardsChoropleth mapsReproducible pipelinesNCD-RisC · GBD · GDD · WHO

Work with me