Ten-Year Surgical Outcomes and Prognostic Factors for French-Door Laminoplasty in the Treatment of Multilevel Cervical Spondylotic Myelopathy

Table 4

The results of correlation analysis between preoperative factors and postoperative complications.

Preoperative factors	Incision infection		Axial symptoms		C5 palsy
	Correlation coefficient		Correlation coefficient		Correlation coefficient
Gender	-0.143	0.260	-0.060	0.618	0.266	0.026
Age at surgery	0.027	0.829	-0.020	0.892	0.140	0.234
Symptom duration	0.011	0.915	0.053	0.691	0.011	0.993
Operative time	0.060	0.650	0.249	0.046	-0.024	0.852
Blood loss	-0.020	0.869	0.047	0.719	0.003	0.974
mJOA score	-0.059	0.616	-0.200	0.133	0.158	0.235
Cobb angle	-0.042	0.749	0.159	0.203	-0.022	0.847
Cervical range of motion	0.065	0.659	-0.073	0.562	0.038	0.798
Intramedullar signal of T2W MRI	-0.066	0.600	-0.050	0.705	0.005	0.957
Canal narrowing ratio	-0.046	0.705	-0.021	0.873	-0.165	0.221
Maximum spinal cord compression	0.132	0.336	0.089	0.455	0.234	0.077

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