There's a warning out today for those who go onlineor to apps to figure out why they have an upsettummy or nagging cough or occasional chest pain.Symptom checkers are accurate only about half ofthe time.

很多人胃不舒服、咳嗽或者偶尔胸口疼痛时会上网咨询或者诉诸于各类应用，对此我们提出警告。因为这些工具能精确检查症状的几率只有50%。

The finding is from a Harvard Medical School studythat reviewed 23 sites. One third listed the correctdiagnosis as the first option for patients. Dr. AteevMehrotra, one of the study's authors, urges patients to be cautious when using these tools.

此项发现源于哈佛医学院的研究，该研究对23个网址进行了检查。三分之一的网站能够提供正确的诊断，作为患者的首选疗法。该研究的作者只有Ateev Mehrotra医生，警告患者使用这些工具时要谨慎。

 

 

About a third of U.S. adults use the sites in place of going to the doctor. Mehrotra says, theseonline tools are about as accurate as the call-in lines offered by many physician groups. "

美国约有三分之一的成年在使用这些网站，而不是去看医生。Mehrotra 表示这些网络工具与很多医师提供的电话服务几乎一样准确。

The diagnosis accuracy rate for physicians is 85 to 90 percent. But Jason Maude says he doesnot want a Web versus doctor showdown.

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