Related Experiment Video
Updated: Feb 21, 2026

An R-Based Landscape Validation of a Competing Risk Model
Published on: September 16, 2022
SSEv: A New Small Samples Evaluator Based on Modified Survival Curves.
Styliani Geronikolou1, Stelios Zimeras2
1Biomedical Research Foundation of the Academy of Athens, 4 Soranou Efessiou Street, 11527, Athens, Greece. sgeronik@gmail.com.
Studying rare diseases is challenging due to small sample sizes. A new tool, Small Samples Evaluator (SSEv), modifies survival curves to aid analysis in various study designs, offering a freely accessible web application.
Area of Science:
- Biostatistics
- Rare Disease Research
- Translational Medicine
Background:
- Rare diseases present significant research challenges due to limited patient populations and small sample sizes in experimental studies.
- Financial constraints and complex methodologies further restrict sample sizes in in vitro and animal model studies.
- Pilot and feasibility studies, crucial before large clinical trials, also contend with small sample limitations.
Purpose of the Study:
- To introduce the Small Samples Evaluator (SSEv), a novel tool designed to address the analytical challenges posed by small sample sizes in research.
- To present a web-based application of the SSEv, making this statistical technique readily accessible to the scientific community.
- To provide a versatile tool applicable to diverse study designs, including repeated measures, case-control, and cross-sectional studies.
Main Methods:
- The Small Samples Evaluator (SSEv) is based on a modified survival curve analysis technique.
- The methodology is adaptable for analyzing data from various research designs, accommodating different statistical needs.
- A user-friendly, web-based application has been developed for the SSEv, facilitating its practical implementation.
Main Results:
- The SSEv provides a robust method for analyzing data from studies with limited sample sizes.
- The web application offers a practical and accessible platform for researchers to apply the SSEv technique.
- The tool's flexibility allows for its application across a spectrum of biomedical research scenarios.
Conclusions:
- The Small Samples Evaluator (SSEv) offers a valuable statistical approach to enhance the credibility of research involving small sample sizes.
- The freely accessible web application democratizes the use of advanced statistical methods for rare disease and other small-sample research.
- SSEv empowers researchers to conduct more reliable analyses, ultimately advancing scientific understanding in data-limited fields.
Related Concept Videos
Survival Curves
The Kaplan-Meier estimator is the most common method for constructing survival curves. This...
Parametric Survival Analysis: Weibull and Exponential Methods
Weibull Distribution
The Weibull distribution is a flexible model used in parametric survival analysis. It can handle both increasing and decreasing hazard rates, depending on its shape parameter...
Assumptions of Survival Analysis
Kaplan-Meier Approach
Comparing the Survival Analysis of Two or More Groups
Introduction To Survival Analysis
The primary goal of survival analysis is to estimate survival time—the time...

