Blood Management and Risk Assessment for Transfusion in Pediatric Spinal Deformity Surgery

Table 1

Characterization of the population under study before and after the implementation of the QSP program (Group A).

Characteristic	Before QSP (A1) % (N)	After QSP (A2) % (N)	Pearson chi-squared (Mann–Whitney)	value	OR (95% CI) (eta-squared)
Gender	63% (49)	83.3% (60)	5.69	0.017	2.9 [1.18; 7.09]
Weight (kg)	57 ± 19.5 (36)	50 ± 12 (56)	−3.11	0.002	0.1
Age (years)	15 ± 3(49)	14 ± 2 (60)	0.219	0.820	0.0004
Cobb angle (°)	64 ± 25.75 (49)	62.3 ± 24.7 (60)	−0.198	0.843	0.0003
Adit. procedure	22% (11)	10% (6)	3.175	0.076	0.384 [0.13; 1.13]
Pre-op hb	12.5 ± 1.8 (49)	13.8 ± 1.3 (58)	3.406	0.01	0.11
Levels	13 ± 3 (49)	12 ± 3 (60)	−2.511	0.01	0.05
OP time (m)	254.5 ± 48 (46)	285 ± 57 (60)	2.859	0.004	0.077

^∗indicates anterior releases.