Agreement between the Danish Cancer Registry and the Danish Colorectal Cancer Group Database

Christensen, Jane; Schmidt, Lise Kristine Højsgaard; Kejs, Anne Mette Tranberg; Søgaard, Jes; Rasted, Margit Caroline; Andersen, O. Ortved; Ingeholm, Peter; Iversen, Lene Hjerrild

doi:10.1080/0284186x.2019.1669815

Cited by 12 publications

(12 citation statements)

References 12 publications

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“…The odds of resection were also lower in Stage III patients compared with Stage II patients in Yorkshire [OR (95% CI) = 0.54 (0.49, 0.60)] but not in Denmark [OR (95% CI) = 0.97 (0.82, 1. 16)]. Additionally, a significant decrease in the use of resection was observed over the study period for both populations (Table 2).…”

Section: Colon Cancer Resections and Outcomesmentioning

confidence: 90%

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Influence of age on surgical treatment and postoperative outcomes of patients with colorectal cancer in Denmark and Yorkshire, England

et al. 2021

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Aim: Denmark and Yorkshire are demographically similar and both have undergone changes in their management of colorectal cancer to improve outcomes. The differential provision of surgical treatment, especially in the older age groups, may contribute to the magnitude of improved survival rates. This study aimed to identify differences in the management of colorectal cancer surgery and postoperative outcomes according to patient age between Denmark and Yorkshire. Method: This was a retrospective population-based study of colorectal cancer patients diagnosed in Denmark and Yorkshire between 2005 and 2016. Proportions of patients undergoing major surgical resection, postoperative mortality and relative survival were compared between Denmark and Yorkshire across several age groups (18-59, 60-69, 70-79 and ≥80 years) and over time.Results: The use of major surgical resection was higher in Denmark than in Yorkshire, especially for patients aged ≥80 years (70.5% versus 50.5% for colon cancer, 49.3% versus 38.1% for rectal cancer). Thirty-day postoperative mortality for Danish patients aged ≥80 years was significantly higher than that for Yorkshire patients with colonic cancer [OR (95% CI) = 1.22 (1.07, 1.38)] but not for rectal cancer or for 1-year postoperative mortality. Relative survival significantly increased in all patients aged ≥80 years except for Yorkshire patients with colonic cancer. Conclusion:This study suggests that there are major differences between the management of elderly patients with colorectal cancer between the two populations. Improved selection for surgery and better peri-and postoperative care in these patients appears to improve long-term outcomes, but may come at the cost of a higher 30-day mortality.

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Section: Colon Cancer Resections and Outcomesmentioning

confidence: 90%

“…This database captures all colorectal cancer patients who have been diagnosed and/or treated at a surgical department in a Danish public hospital. The DCCG reports high ascertainment (95%-99%) when compared with the Danish National Patient Registry and the Danish Cancer Registry [15][16][17].…”

Section: Me Thodmentioning

confidence: 99%

Influence of age on surgical treatment and postoperative outcomes of patients with colorectal cancer in Denmark and Yorkshire, England

et al. 2021

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“…Patients are included in the DLCR based on the first occurrence in the Danish National Patient Registry (DNPR) [ 10 ] of a diagnosis of cancer of the trachea or lung (ICD10 C33 and C34). Information of procedures and treatments in the DNPR are combined with information from the Danish Pathology Register [ 11 ] and the inclusion of incident cases in the DLCR is above 95% [ 12 ].…”

Section: Methodsmentioning

confidence: 99%

Increased use of diagnostic CT imaging increases the detection of stage IA lung cancer: pathways and patient characteristics

et al. 2022

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Background At Silkeborg Regional Hospital, Denmark, the number of stage IA lung cancer increased after implementation of increased use of CT investigations and a corresponding reduction in chest X-ray. The aim of the present study was to understand the changes in referral pathways, patient characteristics and imaging procedures behind the observed increase in early-stage lung cancer. Methods The referral and imaging pathways for all patients diagnosed with lung cancer in 2013–2018 were described based on manually curated information from the electronic health care systems and staging information from the Danish Lung Cancer Registry. We compared the clinical characteristics of patients diagnosed in 2013–2015 and in 2016–2018 after implementation of a change in the use of low dose CT scan (LDCT). For patients diagnosed in 2016–2018, stage IA lung cancer were compared to higher stages using univariable logistic regression analysis. Results Five hundred and forty-seven patients were diagnosed with lung cancer in 2013–2018. Stage IA constituted 13.8% (34/247) in 2013–2015, and 28.3% (85/300) in 2016–2018. Stage IA patients in 2016–2018 were characterised by more comorbidity, fewer packyears and tended to be older than patients with higher stages. In 2016–2018, the largest proportion of stage IA patients (55%) came from within-hospital referrals. The majority of these lung cancers were detected due to imaging procedures with other indications than suspicion of lung cancer. The proportion of stage IA increased from 12% (12/99) to 36% (47/129) (p < 0.001) for hospital referrals and from 17% (22/129) to 23% (38/165) for GP referrals (p = 0.21). The imaging procedures contributing to the increase in stage IA was contrast enhanced CT (22%¸11/51), LDCT (35%; 18/51) and X-ray followed by LDCT (25%; 13/51). Conclusion The increased access to LDCT for patients referred from general practice and the increased hospital requested CT activity resulted in an increase in the number of stage IA lung cancers. Incidental findings on imaging performed for diagnostic purposes unrelated to suspicion of lung cancer contributed a large proportion of the increase.

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“…The study included data from a range of Danish nation-wide population registries and clinical databases considered to have high completeness and validity [ 20 ]; e.g. The Danish Cancer Registry includes 90–97% of all solid tumours [ 21 – 23 ]. From each register, we used the following information.…”

Section: Methodsmentioning

confidence: 99%

Assessing how routes to diagnosis vary by the age of patients with cancer: a nationwide register-based cohort study in Denmark

Danckert

Christensen

Falborg³

et al. 2022

BMC Cancer

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Background Older patients with cancer have poorer prognosis compared to younger patients. Moreover, prognosis is related to how cancer is identified, and where in the healthcare system patients present, i.e. routes to diagnosis (RtD). We investigated whether RtD varied by patients’ age. Methods This population-based national cohort study used Danish registry data. Patients were categorized into age groups and eight mutually exclusive RtD. We employed multinomial logistic regressions adjusted for sex, region, diagnosis year, cohabitation, education, income, immigration status and comorbidities. Screened and non-screened patients were analysed separately. Results The study included 137,876 patients. Both younger and older patients with cancer were less likely to get diagnosed after a cancer patient pathways referral from primary care physician compared to middle-aged patients. Older patients were more likely to get diagnosed via unplanned admission, death certificate only, and outpatient admission compared to younger patients. The patterns were similar across comorbidity levels. Conclusions RtD varied by age groups, and middle-aged patients were the most likely to get diagnosed after cancer patient pathways with referral from primary care. Emphasis should be put on raising clinicians’ awareness of cancer being the underlying cause of symptoms in both younger patients and in older patients.

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Agreement between the Danish Cancer Registry and the Danish Colorectal Cancer Group Database

Cited by 12 publications

References 12 publications

Influence of age on surgical treatment and postoperative outcomes of patients with colorectal cancer in Denmark and Yorkshire, England

Influence of age on surgical treatment and postoperative outcomes of patients with colorectal cancer in Denmark and Yorkshire, England

Increased use of diagnostic CT imaging increases the detection of stage IA lung cancer: pathways and patient characteristics

Assessing how routes to diagnosis vary by the age of patients with cancer: a nationwide register-based cohort study in Denmark

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