ArticleInternational journal of public health2025
The Association Between Humidex and Daily Outpatient Visits for Pediatric Respiratory Diseases in Shijiazhuang, China: A Time Series Analysis.
Article in International journal of public health, 2025. 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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Abstract
Objectives: At present, most studies have focused on the effects of temperature or humidity on children's health, while relatively few have explored the combined effects of temperature and humidity on children's health. We aimed to examine the impact of humidex, a comprehensive temperature and humidity index, on the outpatient department of respiratory diseases in children. Methods: Daily outpatient visits for pediatric respiratory disorders, meteorological conditions, and air pollution in Shijiazhuang were recorded. From 2014 to 2022, we evaluated the impact of humidex on outpatient visits for respiratory disorders in children using a distributed lag non-linear model (DLNM). The model controlled air pollution (PM Results: Humidex and the outpatient exposure-response curve of children's respiratory diseases showed a "V" type. The cumulative relative risks (CRR) of extremely high and low humidex were 1.124 (95% confidence interval [CI] = 1.030-1.228) and 1.344 (95% CI = 1.136-1.590), respectively. The burden of respiratory diseases in children attributed to non-optimal humidex was 13.96% (95% empirical CI[eCI] = 7.81-19.33%), most of which was attributed to low humidex, with an AF of 12.54% (95% eCI = 5.94-18.32%), and only 1.42% (95% eCI = 0.19-2.48%) was due to high humidex. Conclusion: Low humidex exposure significantly increased the risk of respiratory illnesses in children, and children aged 7-14 were more susceptible to low humidex.
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