Table 5. Intraobserver agreement of the cementation quality grading.

	Kappa Coefficient (CI 95%)
Observer 1
AP	0.49 (0.29 – 0.68)
L	0.68 (0.46 – 0.90)
Observer 2
AP	0.53 (0.35 – 0.71)
L	0.43 (0.22 – 0.65)
CI: confidence interval.

CI: confidence interval.