International Journal of Implant Dentistry

Table 2 Univariate regression model for the outcome “Vertical Bone Gain”

From: Clinical and radiographic outcomes following transcrestal maxillary sinus floor elevation with injectable xenogenous bone substitute in gel form: a prospective multicenter study

Number of cases = 71	Univariate analysis
Vertical bone gain	Coeff	[95% CI]	p-value
Age	− 0.01	[− 0.07–0.04]	0.662
Gender
Female	1
Male	− 0.08	[− 1.12–0.96]	0.882
History of periodontitis
No	1
Yes	− 0.35	[− 1.34–0.64]	0.487
Smoking
No	1
Yes	0.30	[− 0.72–1.32]	0.558
Residual bone height	0.69	[− 0.45–1.84]	0.236
Sinus width
Narrow	1
Wide	− 0.94	[− 2.71–0.84]	0.302
Surgical technique
Osteotomes	1
Burs	− 0.40	[− 1.97–1.16]	0.615
Piezoelectric tips	− 2.42	[− 5.15–0.31]	0.083
Implant length	− 524.5	[− 1075.7–26.62]	0.062
Membrane perforation
Absent	1
Present	− 3.01	[− 5.06 to − 0.95]	0.004*
Implant insertion
Immediate	1
Delayed	− 2.64	[− 4.06 to − 1.22]	0.000*

Coeff. coefficient, CI confidence interval, * p-value < 0.05

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