American journal of industrial medicine · 2026
Pulmonary Function Impairment From Occupational Particulate Exposure Among Informal Sector Workers in South Asia: A Systematic Review and Meta-Analysis.
СтатьяОбзорНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Chakraborty Debanjan, Nath Aditya, Mondal Lipika, Saha Indranil, Sahu Subhashis
Аннотация
BACKGROUND: Tens of millions of workers in South Asian informal industries are exposed daily to hazardous dusts and fumes without regulatory protection. Despite the scale of this workforce, no quantitative synthesis of spirometric and symptomatic evidence from this population has previously been conducted.
METHODS: A pre-registered systematic review and meta-analysis (OSF: 10.17605/OSF.IO/ZARDP) was conducted by searching MEDLINE, Embase, Scopus, Web of Science, and CINAHL. Cross-sectional studies comparing spirometry or respiratory symptom prevalence between informal sector workers and healthy controls in South Asia were eligible. Screening was conducted independently by two reviewers using Rayyan. Risk of bias was assessed with the AXIS tool and the JBI cross-sectional checklist. Pooled mean differences (MD) and odds ratios (OR) were estimated using random-effects models with restricted maximum likelihood (REML) estimation and the Knapp-Hartung (HKSJ) correction. Heterogeneity was quantified by I2 and prediction intervals (PIs); meta-regression examined smoking prevalence, mean age, occupational sector, geographic region, and exposure measurement method as moderators. Certainty of evidence was graded using GRADE.
RESULTS: Thirty-eight studies (33 poolable; ~7880 participants) were included, spanning occupational sectors. There was significant between-study heterogeneity, with I2 values of 97%-99% for the main spirometry variables and wide PIs reflecting large interstudy variation in effect sizes by occupation. Brick kiln workers and sawmill workers had the highest and most consistent FEV1 deficits. Overall pooled analyses showed lower FEV1 (MD: -0.59 L, 95% CI: -0.84 to -0.33), lower FVC (MD: -0.53 L, 95% CI: -0.71 to -0.35), and lower FEV1/FVC ratio (MD: -5.5%, 95% CI: -9.21 to -1.78), although PIs crossed the null for some outcomes. Exposed workers were more likely to have respiratory symptoms, such as chronic cough or breathlessness, across all analyses.
CONCLUSIONS: Occupational particulate exposure in South Asian informal sector workers is consistently associated with substantial meaningful reductions in lung function and substantially elevated respiratory symptom burden. Very low evidence certainty underscores the need for high-quality prospective research and targeted respiratory surveillance programmes for this underprotected workforce.
METHODS: A pre-registered systematic review and meta-analysis (OSF: 10.17605/OSF.IO/ZARDP) was conducted by searching MEDLINE, Embase, Scopus, Web of Science, and CINAHL. Cross-sectional studies comparing spirometry or respiratory symptom prevalence between informal sector workers and healthy controls in South Asia were eligible. Screening was conducted independently by two reviewers using Rayyan. Risk of bias was assessed with the AXIS tool and the JBI cross-sectional checklist. Pooled mean differences (MD) and odds ratios (OR) were estimated using random-effects models with restricted maximum likelihood (REML) estimation and the Knapp-Hartung (HKSJ) correction. Heterogeneity was quantified by I2 and prediction intervals (PIs); meta-regression examined smoking prevalence, mean age, occupational sector, geographic region, and exposure measurement method as moderators. Certainty of evidence was graded using GRADE.
RESULTS: Thirty-eight studies (33 poolable; ~7880 participants) were included, spanning occupational sectors. There was significant between-study heterogeneity, with I2 values of 97%-99% for the main spirometry variables and wide PIs reflecting large interstudy variation in effect sizes by occupation. Brick kiln workers and sawmill workers had the highest and most consistent FEV1 deficits. Overall pooled analyses showed lower FEV1 (MD: -0.59 L, 95% CI: -0.84 to -0.33), lower FVC (MD: -0.53 L, 95% CI: -0.71 to -0.35), and lower FEV1/FVC ratio (MD: -5.5%, 95% CI: -9.21 to -1.78), although PIs crossed the null for some outcomes. Exposed workers were more likely to have respiratory symptoms, such as chronic cough or breathlessness, across all analyses.
CONCLUSIONS: Occupational particulate exposure in South Asian informal sector workers is consistently associated with substantial meaningful reductions in lung function and substantially elevated respiratory symptom burden. Very low evidence certainty underscores the need for high-quality prospective research and targeted respiratory surveillance programmes for this underprotected workforce.