Table 1. Means and SDs of push-out bond strength by root level, type of post, type of cement, and by subgroup.

	N	Mean	SD	Minimum	Maximum
Root level
Coronal	48	7.75	7.01	0.12	26.59
Middle	48	11.38	10.31	0.05	48.46
Type of post
Fiber	48	11.18	9.98	0.12	48.46
EverStick	48	7.94	7.57	0.05	29.19
Type of cement
Rely-X	48	13.26	8.73	0.28	48.46
G-CEM	48	5.87	7.62	0.05	26.59
Subgroup
PF-R	24	14.52	10.62	0.28	48.46
PF-G	24	7.84	8.21	0.12	24.80
ES-R	24	11.99	6.30	0.91	29.19
ES-G	24	3.90	6.57	0.05	26.59