Evidence map›Paper›PMID 39890224›Full record

SynthesisThe Lancet. Global health2025

The prevalence of hypoxaemia in paediatric and adult patients in health-care facilities in low-income and middle-income countries: a systematic review and meta-analysis.

Hamish R Graham, Esrat Jahan, Rami Subhi, Farhia Azrin, Jaclyn R Maher, Jasmine L Miller, Ahmed Ehsanur Rahman, Felix Lam

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in The Lancet. Global health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Hamish R GrahamMelbourne Children's Global Health, MCRI, University of Melbourne, Royal Children's Hospital, Parkville, VIC, Australia. Electronic address: hamish.graham@rch.org.au.
Esrat JahanInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Rami SubhiMelbourne Children's Global Health, MCRI, University of Melbourne, Royal Children's Hospital, Parkville, VIC, Australia.
Farhia AzrinInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Jaclyn R MaherMelbourne Children's Global Health, MCRI, University of Melbourne, Royal Children's Hospital, Parkville, VIC, Australia.
Jasmine L MillerClinton Health Access Initiative, Boston, MA, USA.
Ahmed Ehsanur RahmanInternational Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh.
Felix LamClinton Health Access Initiative, Boston, MA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHypoxaemia (low oxygen saturation in blood) is a key predictor of in-hospital mortality, affecting people of all ages with many different conditions. Early detection and treatment of hypoxaemia are critical, but there are few data to quantify hypoxaemia burden outside the child pneumonia population. We aimed to estimate hypoxaemia prevalence for adults and children with acute illness attending health facilities in low-income and middle-income countries (LMICs).

methodsWe conducted a systematic review and meta-analysis, searching MEDLINE, PubMed, Embase, Cumulated Index in Nursing and Allied Health Literature, Index Medicus, and Google Scholar for studies reporting hypoxaemia prevalence among patients attending health facilities. We included articles with original data on peripheral blood oxygen saturation (SpO

findingsWe identified 9173 unique records from searches and included 213 in meta-analyses involving 601 757 participants. The majority of studies were from the World Bank regions of sub-Saharan Africa (108 [51%] of 213) or south Asia (58 [27%]). The pooled prevalence of hypoxaemia among admitted patients was 24·5% (95% CI 19·9-29·4) for neonates (aged 0-28 days), 12·1% (10·0-14·4) for children (aged 1 month-17 years), and 10·8% (4·9-18·7) for adults (aged ≥18 years). Hypoxaemia prevalence was highest in neonatal and primary respiratory conditions but still common in many other conditions. Hypoxaemia was associated with 4·84 (95% CI 4·11-5·69) times higher odds of death than no hypoxaemia.

interpretationHypoxaemia is common across all age groups and a range of primary respiratory and other critical illnesses and is strongly associated with death. These estimates will inform oxygen-related strategies and programmes, and integration of pulse oximetry and oxygen into clinical guidelines, service structures, and strategies for maternal, neonatal, child, adolescent, and adult health.

fundingBill & Melinda Gates Foundation, the ELMA Foundation, and Unitaid.

Indexed as

Developing CountriesHealth FacilitiesHypoxiaAdultChildChild, PreschoolHumansPrevalence

Identifiers

PMID39890224
PMCPMC11783038

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.