Table 2.

Demographic data for the two groups at the third year of the survey. Anatomical and outcome variables before and 3 years after surgery: volume of alveolar ridge or V into the VOI, and outcome variable (alveolar ridge volume change percentages or ΔV%). Shapiro-Wilk test significance (p_SW), Wilcoxon rank-sum test significance between unpaired data (p_W). Statistically significant values are in bold.

Procedure		Immediate			Delayed
sample size		11			11
genders ratio (male/female)		4/7			5/6
incisor/bicuspid		7/4			6/5
Procedure		Immediate			Delayed
Variable	Size		psw	Size		psw	pW Immediate vs. Delayed
Overall
${\mathrm{V}}_{\mathrm{preop}}$ (mm3)	11	0.54(0.12)	0.7472	11	0.63(0.26)	0.3601	0.2297
${\mathrm{V}}_{3\mathrm{yr}}$ (mm3)	11	0.46(0.09)	0.6381	11	0.51(0.19)	0.4537	0.9676
ΔV (mm3) preop→3 year	11	−0.07(0.11)	0.0452	11	−0.18(0.10)	0.8955	0.035
%ΔVpreop→3 year	11	−14.6(15.5)	0.3206	11	−27.1(11.7)	0.9334	0.0291