NeuroTexas Institute, St. David's HealthCare, Austin, Texas 78705, USA.
Neurosurgery. 2011 Jan;68(1):132-8; discussion 138-9. doi: 10.1227/NEU.0b013e3181fe23a1.
A seasonal and meteorological influence on the incidence of spontaneous subarachnoid hemorrhage (SAH) has been suggested, but a consensus in the literature has yet to emerge.
This study examines the impact of weather patterns on the incidence of SAH using a geographically broad analysis of hospital admissions and represents the largest study of the topic to date.
We retrospectively analyzed SAH admissions to 155 US hospitals during the calendar years 2004 to 2008 (N = 7758). Daily weather readings for temperature, pressure, and humidity were obtained for the same period from National Oceanic and Atmospheric Administration weather stations located near each hospital. The daily values of each weather variable were associated with the daily volume of SAH admissions using a combination of correlation and time-series analyses.
No seasonal trends were observed in the monthly volume of SAH admissions during the study period. No significant correlation was detected between the daily SAH admission volume and the day's weather, the previous day's weather, or the 24-hour weather change.
This study represents the most comprehensive investigation of the association between weather and spontaneous SAH to date. The results suggest that neither season nor weather significantly influences the incidence of SAH.
有人提出，自发性蛛网膜下腔出血 (SAH) 的发病与季节和气象因素有关，但文献中尚未达成共识。
本研究通过对医院收治情况进行广泛的地理分析，考察天气模式对 SAH 发病率的影响，这是迄今为止该主题最大规模的研究。
我们对 2004 年至 2008 年期间美国 155 家医院收治的 SAH 患者进行了回顾性分析（N=7758）。同期，我们从美国国家海洋和大气管理局位于每家医院附近的气象站获取了温度、气压和湿度的每日气象读数。使用相关性和时间序列分析相结合的方法，将每种气象变量的每日值与每日 SAH 入院量相关联。
在研究期间，SAH 入院量的月度季节性趋势并不明显。未发现每日 SAH 入院量与当日天气、前一日天气或 24 小时天气变化之间存在显著相关性。
本研究是迄今为止对天气与自发性 SAH 之间关联进行的最全面调查。结果表明，季节和天气均不会显著影响 SAH 的发病率。
