Studies indicate that the mortality effects of temperature may vary by population and region, although little is known about the vulnerability of subgroups to these risks in Korea. This study examined the relationship between temperature and cause-specific mortality for Seoul, Korea, for the period 2000-7, including whether some subgroups are particularly vulnerable with respect to sex, age, education and place of death. The authors applied time-series models allowing nonlinear relationships for heat- and cold-related mortality, and generated exposure-response curves. Both high and low ambient temperatures were associated with increased risk for daily mortality. Mortality risk was 10.2% (95% confidence interval 7.43, 13.0%) higher at the 90th percentile of daily mean temperatures (25 °C) compared to the 50th percentile (15 °C). Mortality risk was 12.2% (3.69, 21.3%) comparing the 10th (-1 °C) and 50th percentiles of temperature. Cardiovascular deaths showed a higher risk to cold, whereas respiratory deaths showed a higher risk to heat effect, although the differences were not statistically significant. Susceptible populations were identified such as females, the elderly, those with no education, and deaths occurring outside of a hospital for heat- and cold-related total mortality. Our findings provide supportive evidence of a temperature-mortality relationship in Korea and indicate that some subpopulations are particularly vulnerable.

中文翻译：

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韩国首尔对温度相关死亡率的脆弱性

研究表明，温度对死亡率的影响可能因人口和地区而异，尽管人们对韩国亚群对这些风险的脆弱性知之甚少。本研究调查了韩国首尔 2000-7 年期间气温与特定原因死亡率之间的关系，包括某些亚组是否在性别、年龄、教育和死亡地点方面特别脆弱。作者应用了时间序列模型，允许热和冷相关死亡率的非线性关系，并生成暴露-反应曲线。环境温度高和低都与每日死亡风险增加有关。与第 50 个百分点 (15°C) 相比，日平均气温 (25°C) 的第 90 个百分点处的死亡率风险高 10.2%（95% 置信区间 7.43，13.0%）。与温度的 10th (-1 °C) 和 50th 百分位数相比，死亡率风险为 12.2% (3.69, 21.3%)。心血管死亡显示出更高的感冒风险，而呼吸系统死亡显示出更高的热效应风险，尽管差异没有统计学意义。确定了易感人群，例如女性、老年人、未受过教育的人群以及因热和冷相关的总死亡率而在医院外死亡的人群。我们的研究结果提供了韩国温度与死亡率关系的支持性证据，并表明某些亚群特别脆弱。虽然差异没有统计学意义。确定了易感人群，例如女性、老年人、未受过教育的人群以及因热和冷相关的总死亡率而在医院外死亡的人群。我们的研究结果提供了韩国温度与死亡率关系的支持性证据，并表明某些亚群特别脆弱。虽然差异没有统计学意义。确定了易感人群，例如女性、老年人、未受过教育的人群以及因热和冷相关的总死亡率而在医院外死亡的人群。我们的研究结果提供了韩国温度与死亡率关系的支持性证据，并表明某些亚群特别脆弱。