Probability of observing results as extreme as those observed assuming null hypothesis is true
Expansion
Probability value
Purpose
Tests statistical significance; P less than 0.05 conventionally considered significant
Clinical Context
P-value does not indicate probability null hypothesis true. P less than 0.05 rejects null hypothesis at 5 percent significance level. Confidence interval preferred for reporting.
Related Terms
- Confidence interval
- Hypothesis test
Key Points
- P less than 0.05 statistically significant; does not indicate clinical significance or effect size