Related Experiment Video

Updated: May 22, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 17, 2013

Reply: "A methodological concern regarding small-sample propensity score matching and overfitting in the study of

Chunjie Zhang1, Yi Li1

  • 1Department of General Surgery, Center for Inflammatory Bowel Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, 210002, China.

Inflammatory Bowel Diseases
|February 19, 2026
PubMed
Abstract

No abstract available in PubMed .

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Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
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