Mosley J G, Galland R B, Saunders J H, Spencer J
Postgrad Med J. 1980 Jan;56(651):30-3. doi: 10.1136/pgmj.56.651.30.
The proctoscopic diagnosis of haemorrhoids may be influenced by the surgeon's knowledge of the presence or absence of associated symptoms. In this study, an observer with no knowledge of the history, was used to check the surgeon's proctoscopic findings in 12 asymptomatic controls, and 24 symptomatic patients on 2 occasions, the latter group undergoing McGivney rubber band ligation. There was very good correlation between the findings of the surgeon and the observer, indicating a lack of 'historical bias'. The documentation method designed to allow this comparison proved sufficiently accurate and reproducible to enable a correlation between haemorrhoidal mass and symptoms. Relief of symptoms after treatment correlated well with an objective reduction in haemorrhoidal mass.
痔疮的直肠镜诊断可能会受到外科医生对相关症状有无的了解程度的影响。在本研究中，一名对病史不知情的观察者，在两次检查中对12名无症状对照者以及24名有症状患者的直肠镜检查结果进行核对，后一组患者接受了麦吉夫尼橡皮筋结扎术。外科医生与观察者的检查结果之间具有很好的相关性，表明不存在“病史偏差”。为便于这种比较而设计的记录方法被证明足够准确且可重复，从而能够将痔块与症状联系起来。治疗后症状的缓解与痔块的客观缩小密切相关。
