出 处:《中华流行病学杂志》2010年第2期179-184,共6页Chinese Journal of Epidemiology
基 金:基金项目:中国环境科学研究院中央级公益性科研院所基本科研业务专项(2007KYYW06)
摘 要:目的探讨北京市气温热浪(热浪)对当地居民每日心脑血管疾病死亡人数的影响。方法运用病例交叉设计方法,分析北京市1999年1月1日至2000年6月30日期间热浪对居民每日心脑血管疾病死亡人数的影响,同时研究其对每日急性心肌梗死(AMI)死亡人数的影响。选择夕匕亡发生前第7天作为自身对照,分别计算不同长度的危险期OR值,以最高OR值及其对应的危险期来反映热浪过程对居民心脑血管疾病死亡人数影响的大小、滞后天数及持续时间。结果研究期间共发生5次热浪。第1次持续9d,最高气温为38.8℃,平均湿度为46.7%,居民每日心血管疾病死亡、脑血管疾病死亡和AMI死亡的OR值分别为1.384(95%CI:1.128~1.697)、1.776(95%CI:1.456~2.167)和1.276(95%CI:O.905~1.799);第2次热浪持续3d,最高气温为36.8℃,平均湿度为61.0%,3种死因每日死亡的OR值分别为1.385(95%CI:0.678~2.826)、1.300(95%CI:0.726~2.329)和2000(95%CI:0.684~5.851);第3次热浪持续7d,最高气温为41.5℃,平均湿度为58.5%,3种死因每日死亡的OR值分别为2.613(95%CI:2.116~3.228)、2.317(95%CI:1.875~2.863)和3.088(95%CI:2.098~4.546);第4次持续3d,最高气温为39.6℃,平均湿度为31.9%,3种死因每日死亡的OR值分别为1.333(95%CI:0.724~2.457)、2.429(95%CI:1.007~5.856)和3.333(95%CI:0.917~12.112);第5次热浪持续4d,最高气温为37.4℃,平均湿度为42.O%,3种死因每日死亡OR值分别为2.333(95%CI:1.187~4.588)、1.727(95%CI:0.822~3.630)和1.800(95%CI:0.603~5.371)。结论(1)热浪对居民心脑血管疾病夕匕亡有影响,且存在滞后效应,滞后期为2~4d,其中AMI死亡的滞后期较短,为0~2d;(2�Objective To explore the impct of heat wave on the daily deaths caused by cardiovascular disease and cerebrovascular diseases in Beijing. Methods A case-crossover design was used to study the impact of 5 heat waves on the daily number of deaths from cardiovascular diseases and cerebrovascular disease, from Jan. 1, 1999 to Jun. 30, 2000. We also investigated the rclationship between the heat wave and acute myocardial infarction deaths. The 7th day before death was chose as the indicator of self-control. The OR value of different lengths of risk period was calculated. The highest OR value and its corresponding risk period was used to reflect the impact of heat wave on daily number of cardiovascular and eerebrovaseular disease deaths, lag days and their durations. Results There were five heat waves during the study period. The first heat wave lasted for 9 days, with the maximum temperature as 38.8 ℃ and average humidity as 46.7%. The OR value for the cardiovascular disease death, cerebrovascular disease death and acute myocardial infarction death were 1.384 (95%CI: 1.128-1.697), 1.776 (95% CI: 1.456-2.167) and 1.276 (95% CI: 0.905-1.799) respectively. The second heat wave lasted 3 days, with the maximum temperature of 36.8 % and average humidity of 61.0%. The OR value for the three causes of death were 1.385 (95% CI: 0.678- 2.826), 1.300 (95%CI: 0.726-2.329) and 2.000 (95%CI: 0.684-5.851) respectively. The third heat wave continued for 7 days, with the maximum temperature of 41.5℃, and average humidity of 58.5%. The OR value for the daily death counts caused by cardiovascular disease, cerebrovascular diseases and acute myocardial infarction were 2.613 (95% CI: 2.116-3.228 ), 2.317 ( 95% CI: 1.875- 2.863 ) and 3.088(95%CI:2.098-4.546) respectively. The fourth wave lasted for 3 days, with the maximum temperature as 39.6 ℃ and average humidity as 31.9%. The OR value for the deaths caused by cardiovascular disease, cerebrovascular diseases and acute myocardial
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