最近英国一项回顾性研究发现 ,很多呼吸内科疾病的诊断和监测试验缺乏高质量的证据。研究者对英国一所呼吸内科诊所常用的临床试验进行了检查 ,以确定建立在高质量证据基础上的试验有多少 (BMJ2 0 0 3 ,3 2 7∶113 6)。结果显示 ,用于确定或排除诊断的试验 ,仅 1/2有高质量的证 A recent retrospective study in the UK found that many diagnostic and monitoring tests for respiratory medical diseases lack high-quality evidence. The researchers examined commonly used clinical trials in a respiratory medicine clinic in the United Kingdom to determine how many trials were based on high-quality evidence (BMJ 2003, 327, 113 6). The results showed that only 1/2 of the tests used to determine or rule out the diagnosis had high quality evidence