Research & Statistics
Effect Size Calculator — Cohen's d
Effect size quantifies the practical significance of research findings in physiotherapy. Cohen's d is the most commonly used effect size measure for comparing two groups.
Formula
d = (M1 - M2) / SD_pooled
Normal Range
0.2: Small effect | 0.5: Medium effect | 0.8: Large effect
Clinical Use
Interpreting physiotherapy research, clinical significance assessment, meta-analysis.
Use the Calculator
Enter patient values and get instant AI-powered clinical interpretation.