a Cooper,Crystale Purvis % a Mallon,Kenneth P % a Leadbetter,Steven Pollack,Lori a % a Peipins,Lucy a %+疾病控制和预防中心，4770 Buford Hwy, NE, MS K-55，亚特兰大，GA 30341, USA， +1 770 457 3181，lpollack@cdc.gov %K互联网%K肿瘤%K健康教育%D 2005 %7 1.7.2005 %9原始论文%J J医学互联网Res %G英文%X背景:为了查找在线健康信息，互联网用户通常使用搜索引擎，如Yahoo!或者谷歌。我们研究了雅虎!与美国23种最常见癌症相关的搜索活动。目的:目的是测试Yahoo!癌症搜索活动(估计癌症发病率、估计癌症死亡率和癌症新闻报道量)，并研究Yahoo!癌症搜索活动。方法:雅虎癌症搜索活动是从一个名为Yahoo! Buzz Index. The American Cancer Society's estimates of cancer incidence and mortality were used. News reports associated with specific cancer types were identified using the LexisNexis “US News” database, which includes more than 400 national and regional newspapers and a variety of newswire services. Results: The Yahoo! search activity associated with specific cancers correlated with their estimated incidence (Spearman rank correlation, ρ = 0.50, P = .015), estimated mortality (ρ = 0.66, P = .001), and volume of related news coverage (ρ = 0.88, P < .001). Yahoo! cancer search activity tended to be higher on weekdays and during national cancer awareness months but lower during summer months; cancer news coverage also tended to follow these trends. Sharp increases in Yahoo! search activity scores from one day to the next appeared to be associated with increases in relevant news coverage. Conclusions: Media coverage appears to play a powerful role in prompting online searches for cancer information. Internet search activity offers an innovative tool for passive surveillance of health information–seeking behavior. %M 15998627 %R 10.2196/jmir.7.3.e36 %U //www.mybigtv.com/2005/3/e36/ %U https://doi.org/10.2196/jmir.7.3.e36 %U http://www.ncbi.nlm.nih.gov/pubmed/15998627