Evidence map›Paper›PMID 31856292›Full record

ArticleThe British journal of dermatology2020

Predicting keratinocyte carcinoma in patients with actinic keratosis: development and internal validation of a multivariable risk-prediction model.

S Tokez, M Alblas, T Nijsten, L M Pardo, M Wakkee

Open access · hybridAbstract read
In one paragraph

Article in The British journal of dermatology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.1field-weighted citation impact, top 21% of its field
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

9 citing papers in PubMed, 19 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

S TokezDepartment of Dermatology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0002-1640-2368
M AlblasDepartment of Public Health, Erasmus MC University Medical Centre, Rotterdam, the Netherlands.ORCID 0000-0003-2690-8810
T NijstenDepartment of Dermatology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0001-9940-2875
L M PardoDepartment of Dermatology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0003-0684-3175
M WakkeeDepartment of Dermatology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands.ORCID 0000-0001-8578-901X
Erasmus MC Cancer Institute · NLErasmus MC · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with actinic keratosis (AK) are at increased risk for developing keratinocyte carcinoma (KC) but predictive factors and their risk rates are unknown.

objectivesTo develop and internally validate a prediction model to calculate the absolute risk of a first KC in patients with AK.

methodsThe risk-prediction model was based on the prospective population-based Rotterdam Study cohort. We hereto analysed the data of participants with at least one AK lesion at cohort baseline using a multivariable Cox proportional hazards model and included 13 a priori defined candidate predictor variables considering phenotypic, genetic and lifestyle risk factors. KCs were identified by linkage of the data with the Dutch Pathology Registry.

resultsOf the 1169 AK participants at baseline, 176 (15·1%) developed a KC after a median follow-up of 1·8 years. The final model with significant predictors was obtained after backward stepwise selection and comprised the presence of four to nine AKs [hazard ratio (HR) 1·68, 95% confidence interval (CI) 1·17-2·42], 10 or more AKs (HR 2·44, 95% CI 1·65-3·61), AK localization on the upper extremities (HR 0·75, 95% CI 0·52-1·08) or elsewhere except the head (HR 1·40, 95% CI 0·98-2·01) and coffee consumption (HR 0·92, 95% CI 0·84-1·01). Evaluation of the discriminative ability of the model showed a bootstrap validated concordance index (c-index) of 0·60.

conclusionsWe showed that the risk of KC in patients with AK can be calculated with the use of four easily assessable predictor variables. Given the c-index, extension of the model with additional, currently unknown predictor variables is desirable. Linked Comment: Kim et al. Br J Dermatol 2020; 183:415-416.

Indexed as

CarcinomaKeratosis, ActinicHumansKeratinocytesProspective StudiesRisk Factors

Identifiers

PMID31856292
PMCPMC7496285
OpenAlexW2995022375

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.