Gulliford M C, Petruckevitch A, Burney P G
Department of Public Health Medicine, United Medical School, London.
BMJ. 1991 Aug 24;303(6800):437-40. doi: 10.1136/bmj.303.6800.437.
To determine whether length of delay before treatment; specialty and grade of the surgeon; and use made of surgery, radiotherapy, and chemotherapy influenced the survival of patients with cancer of the bladder, after adjusting for case severity.
Retrospective cohort study.
South East and South West Thames health regions.
609 men aged under 75 resident in the South Thames regions who had been registered as new cases of bladder cancer in 1982, 35 of whom were excluded, leaving 574 eligible patients. Analysis was based on 75% retrieval rate for case notes.
Duration of survival from date of diagnosis of the bladder tumour.
10 prognostic variables were used to adjust for case severity. The median delay from referral to first treatment was 48 (interquartile range 27-84) days. Treatment after a short delay was associated with shorter survival because of the early treatment of more severe cases. Consultants treated 68% of patients, trainee surgeons treated less severe cases. Initial treatment was by a urologist in 67% of cases, but the specialty of the surgeon was not associated with prognosis. The associations of radiotherapy, cystectomy, and systemic chemotherapy with survival were interpreted in terms of selection bias as well as therapeutic effect.
Case severity was the most important influence on survival and influenced length of delay before treatment, grade and specialty of the surgeon, and main treatment allocation. After adjusting for case severity variations in these processes of care were not strongly associated with variations in survival.
在对病例严重程度进行校正后,确定治疗前的延迟时间、外科医生的专业和级别以及手术、放疗和化疗的使用是否会影响膀胱癌患者的生存率。
回顾性队列研究。
泰晤士河南部和西南部健康区域。
居住在泰晤士河南部地区的609名75岁以下男性,他们在1982年被登记为膀胱癌新病例,其中35人被排除,剩下574名符合条件的患者。分析基于病例记录75%的检索率。
从膀胱肿瘤诊断日期起的生存时间。
使用10个预后变量对病例严重程度进行校正。从转诊到首次治疗的中位延迟时间为48天(四分位间距27 - 84天)。延迟时间短的治疗与较短的生存期相关,因为更严重的病例得到了早期治疗。顾问医生治疗了68%的患者,实习外科医生治疗病情较轻的病例。67%的病例初始治疗由泌尿科医生进行,但外科医生的专业与预后无关。放疗、膀胱切除术和全身化疗与生存的关联在选择偏倚以及治疗效果方面得到了解释。
病例严重程度是对生存的最重要影响因素,并且影响治疗前的延迟时间、外科医生的级别和专业以及主要治疗分配。在对病例严重程度进行校正后,这些医疗过程中的差异与生存差异没有强烈关联。