{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T11:07:25Z","timestamp":1781521645402,"version":"3.54.1"},"reference-count":47,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T00:00:00Z","timestamp":1764892800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Violence is a major public health concern, but long-term hospital-based analyses in Latin America remain scarce. This study examined trends, structural breaks, and seasonality of violence-related emergency visits at the Jos\u00e9 Casimiro Ulloa Emergency Hospital in Lima, Peru, between 2015 and 2024. A retrospective analysis of 14,570 visits was performed, classifying cases according to the World Health Organization typology into self-inflicted, interpersonal community, and interpersonal family violence. Descriptive statistics were stratified by sex, life stage, migratory status, and pandemic period: pre-pandemic (2015\u20132019), pandemic (2020\u20132021), and post-pandemic (2022\u20132024). Time-series analyses included segmented regression and seasonal-trend decomposition. Males (78.3%), youth, and adults were the most affected groups. Interpersonal community violence accounted for 94.2% of cases and closely mirrored the overall series, peaking at 327 visits in July 2019 and falling to 28 in April 2020. Segmented regression showed significant immediate decreases at the onset of the pandemic (\u221271.6 visits, p &lt; 0.001) and partial rebounds after 2022. Family violence remained consistently low and stable, while self-inflicted violence displayed a pre-pandemic upward trend, a sharp decline in 2020, and higher post-pandemic levels. Seasonality was evident before 2020, disappeared during the pandemic, and re-emerged with reduced amplitude thereafter. The COVID-19 pandemic caused abrupt but heterogeneous disruptions in violence-related emergency visits in Lima.<\/jats:p>","DOI":"10.3390\/ijerph22121828","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T10:50:38Z","timestamp":1764931838000},"page":"1828","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Impact of the COVID-19 Pandemic on Violence-Related Emergency Visits: Trend, Seasonality, and Interrupted Time-Series Analysis in Peru, 2015\u20132024"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3117-5332","authenticated-orcid":false,"given":"Claudia Veralucia Salda\u00f1a","family":"Diaz","sequence":"first","affiliation":[{"name":"Grupo de Investigaci\u00f3n NURCARE, Programa Acad\u00e9mico de Enfermer\u00eda, Universidad Privada Norbert Wiener, Lima 00051, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan Carlos Ezequiel","family":"Roque Quezada","sequence":"additional","affiliation":[{"name":"Hospital de Emergencias Jos\u00e9 Casimiro Ulloa, Lima 00051, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Diana Karolina","family":"Urbano S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Grupo de Investigaci\u00f3n NURCARE, Programa Acad\u00e9mico de Enfermer\u00eda, Universidad Privada Norbert Wiener, Lima 00051, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V\u00edctor","family":"Llacsa Saravia","sequence":"additional","affiliation":[{"name":"Hospital de Emergencias Jos\u00e9 Casimiro Ulloa, Lima 00051, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Gonzales Guzm\u00e1n","sequence":"additional","affiliation":[{"name":"Hospital de Emergencias Jos\u00e9 Casimiro Ulloa, Lima 00051, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,5]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2002). 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