Peri-Implant Bone Loss at Implants Placed in Preserved Alveolar Bone Versus Implants Placed in Native Bone: A Retrospective Radiographic Study

Table 2: Comparison of the peri-implant bone loss between the two independent operators with correlation coefficients.

–		N	Mean (mm)	SD (mm)	Correlation Coefficients
Pair 1	Rx 6 Mes J	212	0.9255	0.7352	0.898
Pair 1	Rx 6 Mes A	212	0.8901	0.7287	0.898
Pair 2	Rx 6 Dis J	212	0.9252	0.7623	0.941
Pair 2	Rx 6 Dis A	212	0.8807	0.7458	0.941
Pair 3	Rx 12 Mes J	212	1.0363	0.6542	0.812
Pair 3	Rx 12 Mes A	73	0.9808	0.6434	0.812
Pair 4	Rx 12 Dis J	73	1.1260	0.7434	0.947
Pair 4	Rx 12 Dis A	73	1.0178	0.7036	0.947