Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Contingency table of the observation frequency: Agreement between magnetic resonance imaging (MRI) and arthroscopy.
| Arthroscopy (Cartilage changes) | Total | |||
|---|---|---|---|---|
| Changes | Positive | Negative | ||
| MRI | Positive | 9 | 22 | 31 |
| (Bone changes) | Negative | 2 | 17 | 19 |
| Total | 11 | 39 | 50 | |
Concordance rate of observation frequency=52%, κ coefficient=0.154,
95% confidence interval [-0.078, 0.386], p=0.108
