Research & Statistics
Confidence Interval Calculator
Confidence intervals are essential for interpreting physiotherapy research findings. They provide a range of plausible values for a population parameter based on sample data.
Formula
CI = Mean ± Z × (SD / √n)
Normal Range
95% CI: Z=1.96 | 99% CI: Z=2.576 | 90% CI: Z=1.645
Clinical Use
Interpreting research findings, evidence-based practice, clinical decision making.
Use the Calculator
Enter patient values and get instant AI-powered clinical interpretation.