Evidence map›Paper›PMID 42077459›Full record

ArticleFrontiers in endocrinology2026

Diagnostic model for angiographic obstructive coronary artery disease combining CHG, DELC, and traditional risk factors: a bootstrap validation study.

Wenxin Lin, Rui Gong, Mingliang Sun, Ruoling Guo, Yanying Yao, Bo Liu, Min Zhang, Xueyan Wang, Donglei Luo

Abstract readValidation Study
In one paragraph

Article in Frontiers in endocrinology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Wenxin LinGraduate School, Chengde Medical University, Chengde, China.
Rui GongGraduate School, Chengde Medical University, Chengde, China.
Mingliang SunGraduate School, Chengde Medical University, Chengde, China.
Ruoling GuoGraduate School, Chengde Medical University, Chengde, China.
Yanying YaoDepartment of Cardiology, Chengde Central Hospital/Second Clinical College of Chengde Medical University, Chengde, China.
Bo LiuDepartment of Cardiology, Chengde Central Hospital/Second Clinical College of Chengde Medical University, Chengde, China.
Min ZhangDepartment of Cardiology, Chengde Central Hospital/Second Clinical College of Chengde Medical University, Chengde, China.
Xueyan WangClinical laboratory, Chengde Central Hospital/Second Clinical College of Chengde Medical University, Chengde, Hebei, China.
Donglei LuoDepartment of Cardiology, Chengde Central Hospital/Second Clinical College of Chengde Medical University, Chengde, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: To construct and internally validate a diagnostic model for angiographic obstructive coronary artery disease (obstructive CAD) (defined as ≥50% stenosis on coronary angiography) incorporating the cholesterol, high-density lipoprotein, and glucose (CHG) index and diagonal earlobe crease (DELC) alongside other traditional risk factors. Methods: The study employed a cross-sectional design, involving a total of 1,645 patients, who were divided into two groups: those diagnosed with obstructive CAD (n = 1,298) and those without (n = 347). Independent risk factors were screened using least absolute shrinkage and selection operator (LASSO) regression and subsequently incorporated into a binary logistic regression model to construct the diagnostic model. The dose-response relationship between CHG and obstructive CAD risk was examined using restricted cubic spline analysis (RCS). The incremental diagnostic value was examined through DeLong's test for area under the receiver operating characteristic curve (AUC) comparisons and through integrated discrimination improvement (IDI) and net reclassification improvement (NRI) for risk reclassification and discrimination improvement. Internal validation was performed using the Bootstrap method (B = 500 resamples). The model's discriminative ability, calibration, and clinical utility were comprehensively assessed through a nomogram, AUC, calibration curve, decision curve analysis (DCA), and clinical impact curve (CIC). Results: Lasso regression ultimately identified six independent risk factors: male sex, hypertension, age, serum creatinine (Scr), CHG, and DELC. RCS revealed a linear positive correlation between the CHG index and obstructive CAD risk (P for nonlinear = 0.865). The constructed model yielded an apparent AUC of 0.692 (95% CI: 0.661-0.724) on the full dataset, with an optimistically corrected AUC of 0.683 (95% CI: 0.650-0.715) following internal validation via bootstrapping. Conclusion: CHG and DELC represent independent risk factors for obstructive CAD, with CHG levels exhibiting a linear relationship with obstructive CAD risk. The diagnostic model constructed based on these factors could assist in guiding subsequent diagnosis and treatment in high-risk populations.

Indexed as

Blood GlucoseCholesterolCoronary AngiographyCoronary Artery DiseaseEar, ExternalAgedCross-Sectional StudiesFemaleHumansMaleMiddle AgedRisk FactorsROC CurveBlood GlucoseCholesterolbootstraps approachCHGDELCdiagnostic modelobstructive coronary artery disease

Identifiers

PMID42077459
PMCPMC13133684

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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.