Postgraduate in Meteorology, Faculty of Meteorology, Federal University of Pelotas, Pelotas, Brazil.
Faculty of Agronomy, Federal University of the Southern Border, Cerro Largo, Brazil.
Int J Biometeorol. 2022 Nov;66(11):2301-2308. doi: 10.1007/s00484-022-02357-4. Epub 2022 Sep 2.
This work aims to analyze the relationship between meteorological conditions and the occurrence of hospital admissions for pneumonia in children under 5 years of age in the Metropolitan Region of Porto Alegre, Brazil, from 1998 to 2017. To this end, data from hospital admissions obtained from the Unified Health System database (DATASUS) were used and classified into two groups: acute respiratory infections (ARI) and asthma, according to the international classification of diseases, tenth edition (ICD-10). Data regarding meteorological variables were also used: temperature, relative humidity, atmospheric pressure and wind speed, at 12Z and 18Z, as well as the Thermal Comfort Index (TCI), Effective Temperature as a function of the wind (ETw) and Windchill (W). From the data obtained, a descriptive analysis of the diseases and a statistical analysis with the analysis of correlation and main components were performed. Results showed that pneumonia (catalogued in the ICD-10 as J12 to J18) was the main cause of hospitalizations in children. The annual, monthly and daily hospitalization frequency distributions showed higher rates of admissions occurring in the months of May to September. The peaks of admissions and high admissions (HA) occurred mainly in the winter months (June, July and August), and in 1998. Meanwhile, the correlation and principal component analysis showed an increase in hospital admissions due to pneumonia related to a decrease in temperature and ETw and W indices (negative anomalies) and an increase in atmospheric pressure and relative humidity (positive anomalies).
本研究旨在分析 1998 年至 2017 年期间巴西阿雷格里港大都市地区气象条件与 5 岁以下儿童肺炎住院人数之间的关系。为此，利用了来自统一卫生系统数据库（DATASUS）的住院数据，并根据国际疾病分类第十版（ICD-10）将其分为两组：急性呼吸道感染（ARI）和哮喘。还使用了气象变量数据：12Z 和 18Z 的温度、相对湿度、大气压和风速，以及热舒适度指数（TCI）、有效温度（风速函数）（ETw）和风冷指数（W）。从获得的数据中，对疾病进行了描述性分析，并进行了相关性和主成分分析的统计分析。结果表明，肺炎（ICD-10 编码为 J12 至 J18）是导致儿童住院的主要原因。年度、月度和每日住院频率分布显示，5 月至 9 月的住院率较高。住院人数和高住院率（HA）的高峰主要出现在冬季（6、7 和 8 月）和 1998 年。同时，相关性和主成分分析表明，与温度和 ETw 及 W 指数（负异常）下降以及大气压和相对湿度（正异常）升高有关的肺炎住院人数增加。
