More recent trials, such as that conducted in the UK, show at most a non-significant benefit from screening. The results of the 25-year follow-up of the Canadian trial – which can be considered the most accurate, given that the women were carefully characterized according to risk factors and had access to the most advanced treatments – are even more damning.
更多近期试验，比方说英国的那次试验，最多显示筛查能带来微弱的效果。被公认准确性最高的加拿大试验25年随访项目（鉴于参与者均按风险因素悉心整理过，并且能够获得最先进的治疗）得出的结论甚至更加糟糕。