Evidence map›Paper›PMID 32246157›Full record

SynthesisDiabetologia2020

Prediction models for development of retinopathy in people with type 2 diabetes: systematic review and external validation in a Dutch primary care setting.

Amber A van der Heijden, Giel Nijpels, Fariza Badloe, Heidi L Lovejoy, Linda M Peelen, Talitha L Feenstra, Karel G M Moons, Roderick C Slieker, Ron M C Herings, Petra J M Elders and 1 more

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Diabetologia, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

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  5. Cohort Profile: The North East London Diabetes Study (NELDS).International journal of epidemiology · 2026
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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

11 authors at 6 institutions in 1 country.

Amber A van der HeijdenDepartment of General Practice and Elderly Care Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, van der Boechorststraat 7, 1081 BT, Amsterdam, the Netherlands. a.vanderheijden@amsterdamumc.nl.ORCID 0000-0002-6383-3187
Giel NijpelsDepartment of General Practice and Elderly Care Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, van der Boechorststraat 7, 1081 BT, Amsterdam, the Netherlands.
Fariza BadloeDepartment of General Practice and Elderly Care Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, van der Boechorststraat 7, 1081 BT, Amsterdam, the Netherlands.
Heidi L LovejoyDepartment of General Practice and Elderly Care Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, van der Boechorststraat 7, 1081 BT, Amsterdam, the Netherlands.
Linda M PeelenJulius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Talitha L FeenstraGroningen Research Institute of Pharmacy, University of Groningen, Groningen, the Netherlands.
Karel G M MoonsJulius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Roderick C SliekerDepartment of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, Amsterdam, the Netherlands.
Ron M C HeringsDepartment of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, Amsterdam, the Netherlands.
Petra J M EldersDepartment of General Practice and Elderly Care Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC - location VUmc, van der Boechorststraat 7, 1081 BT, Amsterdam, the Netherlands.
Joline W BeulensJulius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Amsterdam Public Health · NLUtrecht University · NLLeiden University Medical Center · NLPharmo Institute · NLRijksmuseum · NLUniversity of Groningen · NL

Funding

Diabetes Fonds Grant no. 2014.00.1753
6 · The paper itself

Abstract

aims/hypothesisThe aims of this study were to identify all published prognostic models predicting retinopathy risk applicable to people with type 2 diabetes, to assess their quality and accuracy, and to validate their predictive accuracy in a head-to-head comparison using an independent type 2 diabetes cohort.

methodsA systematic search was performed in PubMed and Embase in December 2019. Studies that met the following criteria were included: (1) the model was applicable in type 2 diabetes; (2) the outcome was retinopathy; and (3) follow-up was more than 1 year. Screening, data extraction (using the checklist for critical appraisal and data extraction for systemic reviews of prediction modelling studies [CHARMS]) and risk of bias assessment (by prediction model risk of bias assessment tool [PROBAST]) were performed independently by two reviewers. Selected models were externally validated in the large Hoorn Diabetes Care System (DCS) cohort in the Netherlands. Retinopathy risk was calculated using baseline data and compared with retinopathy incidence over 5 years. Calibration after intercept adjustment and discrimination (Harrell's C statistic) were assessed.

resultsTwelve studies were included in the systematic review, reporting on 16 models. Outcomes ranged from referable retinopathy to blindness. Discrimination was reported in seven studies with C statistics ranging from 0.55 (95% CI 0.54, 0.56) to 0.84 (95% CI 0.78, 0.88). Five studies reported on calibration. Eight models could be compared head-to-head in the DCS cohort (N = 10,715). Most of the models underestimated retinopathy risk. Validating the models against different severities of retinopathy, C statistics ranged from 0.51 (95% CI 0.49, 0.53) to 0.89 (95% CI 0.88, 0.91). CONCLUSIONS/

interpretationSeveral prognostic models can accurately predict retinopathy risk in a population-based type 2 diabetes cohort. Most of the models include easy-to-measure predictors enhancing their applicability. Tailoring retinopathy screening frequency based on accurate risk predictions may increase the efficiency and cost-effectiveness of diabetic retinopathy care. REGISTRATION: PROSPERO registration ID CRD42018089122.

Indexed as

AnimalsDiabetes Mellitus, Type 2Diabetic RetinopathyHumansNetherlandsPrimary Health CarePrognosisRisk AssessmentExternal validationPrediction modelsRetinal screeningRetinopathySystematic reviewType 2 diabetes

Identifiers

PMID32246157
PMCPMC7228897
OpenAlexW3015119658

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.