Table 1.

Demographic characteristics of the patients (age, sex) and analyzed risk factors (smoker, alcohol consumer) in the two treatment groups. No significant differences were found among treatment groups (in all occasions p ≥ 0.05).

	Xenograft	Blood Clot	p-Value
N° of patients	64	72
Age (mean ± SD)	61 ± 12.2	61 ± 11.8	0.344 1
N° of sinuses	80	82
N° of implants	162	127
RABH 4–6 mm	95	49
RABH > 6 mm	67	78
Sex
Male N° (%)	39 (60.94%)	38 (52.77%)	0.919 2
Smokers	11 (17.18%)	11 (15.28%)	0.090 2
Alcohol consumers
N° (%)	8 (12.5%)	6 (8.33%)	0.425 2

¹p values from Student’s t test; ² p-value from Chi square test.