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Overall comparison and kappa statistic for all three reviews
| Overall comparison | Ottawa positive | Ottawa negative | Total |
|---|---|---|---|
| RAND out of date | 18 | 10 | 28 |
| RAND still valid | 2 | 47 | 49 |
| Total | 12 | 65 | 77 |
Signals in agreement with each other are in bold.
Kappa = 0.64 (95% CI 0.45–0.83).
