Table 3:

Surgical data.

Surgical parameters	Group A	Group B	P-value
No. of patients	81	75
Operative time	78 (±15) min	118 (±23) min	0.021
Estimated
blood loss	121.3 (±34) mL	210.2 (±52) mL	0.031
Pre-operative
Hb value	13.2 (±3.3) g/dL	13.5 (±4.1) g/dL	0.372
Post-operative
Hb value	11.5 (±4.1) g/dL	11.9 (±3.8) g/dL	0.412
Type of instrumentation
Expedium	-	27 (36%)
CD Solera	-	48 (64%)
Precept	61 (75.3%)	-
CD Voyager	20 (24.7%)	-
Los (days)	3.4 (±2.1)	4.5 (±1.8)°	0.183

Hb: Hemoglobin; Los: Length of stay