• Line Flytkjær Virgilsen, Anette Fischer Pedersen, Peter Vedsted, Gitte Stentebjerg Petersen, and Henry Jensen.
• Research Centre for Cancer Diagnosis in Primary Care, Research Unit for General Practice, Bartholins Allé 2, 8000, Aarhus C, Denmark. line.virgilsen@ph.au.dk.
• Bmc Fam Pract. 2021 Jun 24; 22 (1): 129.

BackgroundGeneral practitioners (GPs) have a key role in the diagnosis of cancer. It is crucial to identify factors influencing the decision to refer for suspected cancer. The aim of this study was to investigate the alignment between the patient's cancer worry and the GP's suspicion of cancer in the first clinical encounter and the association with the time interval from the first symptom presentation until the first referral to specialist care, i.e. the primary care interval (PCI).MethodThe study was performed as a cross-sectional study using survey data on patients diagnosed with incident cancer in 2010 or 2016 and their GPs in Denmark. We defined four alignment groups: 1) patient worry and GP suspicion, 2)  GP suspicion only, 3) patient worry only, and 4) none of the two. A long PCI was defined as an interval longer than the 75th percentile.ResultsAmong the 3333 included patients, both patient worry and GP suspicion was seen in 39.5%, only GP suspicion was seen in 28.2%, only patient worry was seen in 13.6%, and neither patient worry nor GP suspicion was seen in 18.2%. The highest likelihood of long PCI was observed in group 4 (group 4 vs. group 1: PPR 3.99 (95% CI 3.34-4.75)), mostly pronounced for easy-to-diagnose cancer types.ConclusionMisalignment between the patient's worry and the GP's suspicion was common at the first cancer-related encounter. Importance should be given to the patient interview, due to a potential delayed GP referral among patients diagnosed with "easy-to-diagnose" cancer types presenting with unspecific symptoms.

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