| アブストラクト | BACKGROUND: A standard measure of the cancer diagnostic pathway, diagnostic interval, is the time from "first presentation of cancer" to diagnosis. Cancer presentation may be unclear in patients with multimorbidity or non-specific symptoms, signs or test results ("features"). We propose an alternative, guideline interval, with a more certain start date; namely, when the patient first meets suspected-cancer criteria for investigation or referral. METHODS: This retrospective cohort study used Clinical Practice Research Datalink (CPRD) and English cancer registry data. Participants, aged >/=55 years, had diagnostic codes for oesophagogastric cancers in 1/1/12-31/12/17. Features of oesophagogastric cancer in the year before diagnosis were identified from CPRD codes for dysphagia, haematemesis, upper-abdominal mass or pain, low haemoglobin, reflux, dyspepsia, nausea, vomiting, weight loss or thrombocytosis. Diagnostic interval was the time from first feature to diagnosis; guidance interval, the time from first meeting criteria in NICE suspected-cancer guidance to diagnosis. Multimorbidity burden was quantified using Adjusted Clinical Groups(R). Accelerated failure-time models explored associations between multimorbidity burden and length of both diagnostic and guideline interval. RESULTS: There were 3,793 eligible participants (69.0 % male), mean age 74.1 years (SD 10.5). 3,097 (81.7 %) presented with >/=1 feature in the year before diagnosis, and 1,990 (52.5 %) met NICE suspected-cancer criteria. The median for both intervals was 11 days in healthy users, and rose with increasing morbidity burden. At very high multimorbidity burden, diagnostic interval was 5.47 (95%CI 3.25-9.20) times longer and guideline interval was 3.91 (2.63-5.80) times longer than for healthy users. CONCLUSIONS: Guideline interval is proposed as a new measure of the cancer diagnostic pathway. It has a more certain start date than diagnostic interval, and is lengthened less than diagnostic interval in people with a very high multimorbidity burden. Guideline interval has potential for assessing the implementation of suspected-cancer policies. |
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| 組織名 | College House, University of Exeter Medical School, St Luke's Campus, Heavitree;Road, Exeter, EX1 2LU, UK. Electronic address: S.J.Price@exeter.ac.uk.;Smeall Building, University of Exeter, St Luke's Campus, Heavitree Road, Exeter,;EX1 2LU, UK. Electronic address: G.A.Abel@exeter.ac.uk.;Road, Exeter, EX1 2LU, UK. Electronic address: W.H.Hamilton@exeter.ac.uk. |
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