Evidence map›Paper›PMID 31230004›Full record

ArticleBMJ open2019

Post-colonoscopy colorectal cancers identified by probabilistic and deterministic linkage: results in an Australian prospective cohort.

Kavitha Subramaniam, P W Ang, Teresa Neeman, Mitali Fadia, Doug Taupin

Abstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Kavitha SubramaniamGastroenterology and Hepatology Unit, Canberra Hospital, Canberra, Australian Capital Territory, Australia.
P W AngCancer Research, Canberra Hospital, Canberra, Australian Capital Territory, Australia.
Teresa NeemanStatistical Consulting Unit, Australian National University, Canberra, Australia.
Mitali FadiaDepartment of Anatomical Pathology, ACT Pathology, Canberra Hospital, Canberra, Australian Capital Territory, Australia.
Doug TaupinGastroenterology and Hepatology Unit, Canberra Hospital, Canberra, Australian Capital Territory, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivePost-colonoscopy colorectal cancers (PCCRCs) are recognised as a critical quality indicator. Benchmarking of PCCRC rate has been hampered by the strong influence of different definitions and methodologies. We adopted a rigorous methodology with high-detail individual data to determine PCCRC rates in a prospective cohort representing a single jurisdiction.

settingWe performed a cohort study of individuals who underwent colonoscopy between 2001 and 2008 at a single centre serving Australian Capital Territory (ACT) and enclaving New South Wales (NSW) region. These individuals were linked to subsequent colorectal cancer (CRC) diagnosis, within 5 years of a negative colonoscopy, through regional cancer registries and hospital records using probabilistic and deterministic record linkage. All cases were verified by pathology review. Predictors of PCCRCs were extracted.

participants7818 individuals had a colonoscopy in the cohort. Linkage to cancer registries detected 384 and 98 CRCs for notification dates of 2001-2013 (ACT) and 2001-2010 (NSW). A further 55 CRCs were identified from a search of electronic medical records using International Classification of Diseases-10 diagnosis codes. After verification and exclusions, 385/537 CRCs (58% male) were included. PRIMARY OUTCOME MEASURE: PCCRC rates.

resultsThere were 15 PCCRCs in our cohort. The PCCRC incidence rate was 0.384/1000 person-years and the 5-year PCCRC risk was estimated as 0.192% (95% CI 0.095 to 0.289). The index colonoscopy prior to PCCRC was more likely to show diverticulosis (p=0.017 for association, OR 3.56, p=0.014) and have poor bowel preparation (p=0.017 for association, OR 4.19, p=0.009).

conclusionIn this population-based cohort study, the PCCRC incidence rate was 0.384/1000 person-years and the 5-year PCCRC risk was 0.192%. These data show the 'real world' accuracy of colonoscopy for CRC exclusion.

Indexed as

ColonoscopyAdultAgedAustraliaColorectal NeoplasmsEarly Detection of CancerFemaleHumansMaleMiddle AgedProspective StudiesRegistriesRisk FactorsTime Factorscolonoscopycolorectal cancerincidence ratepost-colonoscopy colorectal cancer

Identifiers

PMID31230004
PMCPMC6596957

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