Evidence map›Paper›PMID 42715181›Full record

ArticlePLOS global public health2026

Factors associated with unsuccessful treatment outcomes among drug-resistant tuberculosis patients in Loreto, Peru, 2015-2023: A retrospective cohort study.

Evelyn Genthell Cordova-Pisco, Tery Vasquez-Hassinger, Estela Huamán-Angeles, Karine Zevallos, George Obregon

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Article in PLOS global public health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Evelyn Genthell Cordova-PiscoLaboratorio de Referencia Regional de Loreto, Gerencia Regional de Salud Loreto, Iquitos, Loreto, Perú.ORCID https://orcid.org/0009-0000-3379-1150
Tery Vasquez-HassingerUnidad de Investigación, Hospital Regional de Loreto, Iquitos, Loreto, Perú.ORCID https://orcid.org/0000-0002-9209-8994
Estela Huamán-AngelesCentro Nacional de Salud Pública, Instituto Nacional de Salud, Lima, Perú.
Karine ZevallosFacultad de Medicina Humana, Universidad Nacional de la Amazonía Peruana, Iquitos, Loreto, Perú.
George ObregonCentro Nacional de Salud Pública, Instituto Nacional de Salud, Lima, Perú.ORCID https://orcid.org/0000-0001-8390-6534

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In Loreto, Peru, unsuccessful treatment outcomes among patients with drug-resistant tuberculosis (DR-TB) remain high, underscoring the need to identify associated factors in this Amazonian region. This retrospective cohort study included 417 DR-TB cases registered in the national TB system in Loreto between 2015 and 2023. Loss to follow-up, death, and treatment failure were combined into a single composite outcome variable defined as unsuccessful treatment outcome. Bivariate and multivariable logistic regression analyses were performed to estimate associations between sociodemographic, clinical, and programmatic factors and this outcome. Among the 417 cases analyzed, 49.5% had unsuccessful treatment outcomes: 34.1% due to loss to follow-up, 3.6% due to treatment failure, and 11.8% due to death. Loss to follow-up was the main driver of unsuccessful outcomes, suggesting important gaps in continuity of care and adherence support within the regional health system. In bivariate analyses, unsuccessful outcomes were associated with age 18-30 years (OR: 3.7; 95% CI: 1.6-8.5; p = 0.002), TB-HIV coinfection (OR: 2.4; 95% CI: 1.2-4.6; p = 0.012), previous treatment after loss to follow-up (OR: 2.9; 95% CI: 1.6-5.2; p < 0.001), high bacillary load (+++) (OR: 1.9; 95% CI: 1.0-3.5; p = 0.041), alcoholism (OR: 4.6; 95% CI: 1.5-14.1; p = 0.006), and drug addiction (OR: 7.0; 95% CI: 2.0-24.2; p = 0.002). In the multivariable analysis, alcoholism remained independently associated with unsuccessful outcomes (aOR: 4.0; 95% CI: 1.1-14.2; p = 0.029), while individualized treatment was associated with lower odds of unsuccessful outcomes (aOR: 0.4; 95% CI: 0.1-0.9; p = 0.023). Unsuccessful treatment outcomes among DR-TB patients in Loreto were mainly driven by loss to follow-up, highlighting persistent gaps in treatment continuity and adherence support. Programmatic priorities should include decentralized access to drug-susceptibility testing, community-based adherence strategies, and integrated screening and management of alcohol use within DR-TB care.

Identifiers

PMID42715181
PMCPMC13557377

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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.