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. 2016 Jan 5;6(6):571–583. doi: 10.1055/s-0035-1570084

Table 4. Significant risk factors for specific procedure categories.

	Anterior fusion	Anterior diskectomy and fusion	Posterior fusion	Corpectomy	Foraminotomy	Laminectomy without fusion	Nonfusion (all)	Entire cohort
n	496	174	382	102	677	272	827	1,669^b
DCP incidence (%)	2.6	1.7	7.1	4.9	3.5	2.5	2.4	3.4%
Risk factors (p values)
Age	0.2421	0.7626	0.1474	0.3994	0.0228^a	0.4378	0.2002	0.0061^a
Sitting	–	–	–	–	0.0009^a	0.5206	0.0308^a	0.0036^a
Number of levels	0.0082^a	0.1290	0.0188^a	0.2089	0.0002^a	0.4975	0.0501	<0.0001^a
Intraoperative transfusion	0.0204^a	0.7075	0.9700	0.1772	0.1128	0.2975	0.1514	0.0231^a
Autoimmune other	0.4860	0.6449	0.4289	0.5218	0.0038^a	0.0184^a	0.0018^a	0.0107^a

Abbreviation: DCP, delayed cervical palsy.

^a

p < 0.05.

^b

Several cases are included in more than one procedure category.