Humans297 patientsCohort study

Aggregation-Sensitive Mortality Associations and Firth Penalized Logistic Regression After Hip Fracture Surgery: A Retrospective Cohort Study

Figure 1. Pooled and stratification-adjusted associations with 1-year mortality after hip fracture surgery.
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Figure 1. Pooled and stratification-adjusted associations with 1-year mortality after hip fracture surgery.Pooled and stratification-adjusted associations with 1-year mortality after hip fracture surgery.Demir · CC BY

Journal of Clinical Medicine

Abstract

Background/Objectives: Hip fracture mortality analyses may be influenced by aggregation-related changes in association estimates and sparse data bias, particularly for early mortality outcomes. Methods: This retrospective study included 297 patients who underwent hip fracture surgery between 2020 and 2025.

The paper

Tokat Gaziosmanpaşa Üniversitesi

Journal of Clinical Medicine · 16 Sep 2026 · CC BY

doi.org/10.3390/jcm15187195PubMed 42795966

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