{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T22:46:51Z","timestamp":1792277211726,"version":"4.4.0"},"reference-count":47,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Epidemiol Glob Health"],"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background<\/jats:title>\n            <jats:p>Chronic Suppurative Otitis Media (CSOM) is a disorder characterised by a perforation of the tympanic membrane leading to ear discharge and hearing loss, a disability causing marginalisation in employment, education, social stigma, and reduced wellbeing and quality of life. Previous studies on the global epidemiology of this condition, despite methodological limitations, have estimated global prevalence at 200\u00a0million.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>Adhering to PRISMA guidelines, published literature was systematically reviewed across Ovid and Embase databases, with original community-based studies on CSOM published from 2004 to March 19th, 2025 extracted for final consideration on quality and relevance. Studies focusing on hospital populations were excluded as they seem more likely to represent a biased group of severe cases. Published articles were analysed for data on CSOM prevalence and associated risk factors.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>From 5,394 articles, 29 cross-sectional studies met the inclusion criteria. Included studies predominantly originated from low- and middle-income countries (LMICs) and focused on paediatric populations. A pooled average estimate revealed a CSOM global prevalence of 3.8% of the global population, or 297\u00a0million people, 85% (252\u00a0million) of which in LMICs. 64\u00a0million (21.5%) of those affected had bilateral disease, and 184\u00a0million (62%) had disabling hearing loss defined as &gt;\u200925\u201330 dB. Hearing impairment was reported in only four studies, which affected 50\u201378% of participants. Frequency of ear discharge was reported in only one study.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>The study identifies a significant global burden of CSOM, disproportionately affecting LMICs, and signals to healthcare providers and policymakers a pressing need for initiatives to prevent and manage this disease.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s44197-025-00396-9","type":"journal-article","created":{"date-parts":[[2025,4,4]],"date-time":"2025-04-04T20:12:53Z","timestamp":1743797573000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Epidemiology of Chronic Suppurative Otitis Media: Systematic Review To Estimate Global Prevalence"],"prefix":"10.1007","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9714-0111","authenticated-orcid":false,"given":"Anjola","family":"Onifade","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henriette Wa","family":"Katolo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siddharth","family":"Mookerjee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmood F.","family":"Bhutta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,4,3]]},"reference":[{"key":"396_CR1","doi-asserted-by":"crossref","unstructured":"Bhutta MF, Leach AJ, Brennan-Jones CG. 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