Table 2.

Surgical Results.

	DSA group (n=100)	Non-DSA group (n=21)	P
Operative time (min)	196.8±86.0	155.7±56.4	0.039*b
Blood loss (mL)	443.6±469.1	792.9±871.9	0.011*b
mJOA score
Preoperative	4.4±2.9	3.9±2.0	0.448b
Postoperative	8.9±3.3	8.0±3.0	0.246b
Recovery	4.5±2.9	4.1±2.8	0.557b

mJOA, modified Japanese Orthopaedic Association

Data expression: n, %

P-value: ^b, unpaired t-test, *, statistically significant