Department of Public Health, Korea University Graduate School, Seoul, Republic of Korea.
Department of Preventive Medicine, Korea University College of Medicine, Seoul, Republic of Korea.
Environ Health Prev Med. 2021 May 3;26(1):55. doi: 10.1186/s12199-021-00974-w.
An acute upper respiratory tract infection (URI) is the most common disease worldwide, irrespective of age or sex. This study aimed to evaluate the short-term effect of diurnal temperature range (DTR) on emergency room (ER) visits for URI in Seoul, Korea, between 2009 and 2013.
Daily ER visits for URI were selected from the National Emergency Department Information System, which is a nationwide daily reporting system for ER visits in Korea. URI cases were defined according to International Classification of Diseases, 10 Revision codes J00-J06. The search for DTR effects associated with URI was performed using a semi-parametric generalized additive model approach with log link.
There were 529,527 ER visits for URI during the study period, with a daily mean of 290 visits (range, 74-1942 visits). The mean daily DTR was 8.05 °C (range, 1.1-17.6 °C). The cumulative day (lag 02) effect of DTR above 6.57 °C per 1 °C increment was associated with a 1.42% (95% confidence interval [CI] 0.04-2.82) increase in total URI. Children (≤ 5 years of age) were affected by DTR above 6.57 °C per 1 °C, with 1.45% (95% CI 0.32-2.60) at lag 02, adults (19-64 years) with 2.77% (95% CI 0.39-5.20) at lag 07. When the DTR (lag02) was 6.57 °C to 11.03 °C, the relative risk was significant at 6.01% (95% CI 2.45-9.69) for every 1 °C increase in youth subjects aged for 6 to 18 years.
DTR was associated with a higher risk for ER visits for URI. In addition, the results suggested that the lag effects and relative risks of DTR on URI were quite different according to age.
急性上呼吸道感染（URI）是全球最常见的疾病，无论年龄或性别如何。本研究旨在评估 2009 年至 2013 年期间，韩国首尔昼夜温差（DTR）对急诊室（ER）URI 就诊的短期影响。
从国家急诊部信息系统中选择每日 ER URI 就诊，该系统是韩国全国性的 ER 就诊每日报告系统。URI 病例根据国际疾病分类，第 10 修订版代码 J00-J06 定义。使用对数链接的半参数广义加性模型方法搜索与 URI 相关的 DTR 影响。
在研究期间，有 529527 例 ER URI 就诊，每日平均就诊 290 例（范围为 74-1942 例）。每日平均 DTR 为 8.05°C（范围为 1.1-17.6°C）。DTR 每升高 1°C，超过 6.57°C 的累积日（滞后 02 天）效应与总 URI 增加 1.42%（95%置信区间 [CI] 0.04-2.82）相关。儿童（≤5 岁）受 DTR 影响，每升高 1°C，超过 6.57°C，滞后 02 天为 1.45%（95%CI 0.32-2.60），成年人（19-64 岁）滞后 07 天为 2.77%（95%CI 0.39-5.20）。当 DTR（滞后 02）为 6.57°C 至 11.03°C 时，年龄在 6 至 18 岁的青少年每升高 1°C，相对风险显著增加 6.01%（95%CI 2.45-9.69）。
DTR 与 ER URI 就诊的高风险相关。此外，结果表明，DTR 对 URI 的滞后效应和相对风险因年龄而异。
