Cross-sectional studyindependent cross-checkfull text checked★ key study I-LEG-102 in-depth review
G6PD deficiency in Egyptian newborns
Prevalence of glucose-6-phosphate dehydrogenase deficiency in neonates in Egypt.
Overview
Elella SA et al.. Ann Saudi Med 2017 · PMID 28988250 · DOI 10.5144/0256-4947.2017.362
In 2,782 newborns from Menoufia, 4.3% were G6PD-deficient, including 6.2% of boys.
Does the study support the specific claim? Yes · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Measure G6PD deficiency in newborns.
- How was the study done?
Enzyme test of dried blood spots.
- How many people, animals or samples were studied?
2,782 newborns born in 2015.
- What was actually found?
119 deficient (4.3%).
- How large was the observed effect?
Boys 6.2%, girls 2.1%.
- What do the results mean in everyday life?
Roughly one boy in 16 in this region carries the deficiency that makes fava beans dangerous.
- What are the study's limitations?
One governorate; cut-off choices.
- What does it say about Elawady's specific claim?
Confirms that favism risk is relevant in Egypt.
- Do the results apply to Germany and Europe?
Low relevance for native Europeans.
- What can explicitly not be concluded from this study?
It does not show national prevalence or how many affected children develop haemolysis.
Scientific in-depth review
1. Full reference
- Authors
- Elella SA et al.
- Journal
- Ann Saudi Med
- Year
- 2017
- Identifier
- PMID 28988250 DOI 10.5144/0256-4947.2017.362 · PMC6074198
- Verification
- verified – PubMed efetch 2026-10-26 + Crossref works API
- Retracted
- no
- Corrections
- none
- Extent checked
- full text
- Conflicts of interest and funding
No conflict of interest declared (full text); funding not stated.
2. Research question
What is the prevalence of G6PD deficiency among newborns in Menoufia governorate, Egypt?
3. Study design and population
- Study design
- Cross-sectional study – Cross-sectional newborn screening study (quantitative fluorometric G6PD assay on dried blood spots)
- Population
Infants born in 2015, samples collected with the central laboratories of the Ministry of Health
- Country
Egypt (Menoufia governorate)
- Period
2015
- Sample size
2,782 newborns (1,453 male, 1,329 female)
- Inclusion and exclusion criteria
Randomly selected dried blood spot samples of infants born during 2015.
4. Methods and endpoints
- Exposure / intervention
Not applicable
- Comparator
Not applicable
- Endpoints
G6PD enzyme activity; deficiency prevalence
- Statistical methods
Descriptive proportions; Mann-Whitney test for sex difference
5. Actual results
- Results
119/2,782 (4.3%) deficient; males 91/1,453 (6.2%), females 28/1,329 (2.1%); 17 (0.6%) intermediate; male:female ratio 3.2:1.
- Absolute risks
4.3% overall; 6.2% of boys (recalculated Wilson 95% CI 5.1-7.6%).
- Authors' conclusion
The prevalence emphasises the importance of neonatal screening, early detection, intervention and genetic counselling.
6. Strengths
- Quantitative enzyme assay
- Sample drawn from a routine Ministry of Health screening programme
- Full text read
7. Weaknesses
- Single governorate
- Low kit cut-off may misclassify heterozygous females
- Minor inconsistency in the female denominator (1,329 vs 1,339)
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Prevalence study; selection procedure only briefly described; limitation stated: no direct sample collection from local centres.
9. Assessment of the statistical interpretation
Recalculated prevalence and Wilson CIs agree with the paper (stats/C-LEG-03_elella2017_prevalence.py).
10. Relevance to the specific claim
Directly supports the statement that G6PD deficiency is frequent in Egypt (C-LEG-03).
11. Independent contrary findings
I-LEG-104 found 1.0% in Egyptian men in Kuwait (older method, migrant sample).
12. Transferability to Germany and Europe
Not applicable to native Northern European populations; relevant for people of Egyptian origin.
13. Overall methodological judgement
Best available Egyptian newborn screening estimate found: about 6 in 100 boys deficient in one governorate.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | high |
| Directness | direct |
| Reproducibility | partly replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Regional variation across Egypt; national survey lacking.