Table 1.

Descriptive Characteristics of single-level PLF patients with and without Ehlers Danlos Syndrome

	Non-Matched PLF Groups			Matched PLF Groups
	Non-EDS	EDS	P -Value	Non-EDS	EDS	P - Value
Sample Size	N = 170100	N = 242		N = 957	N = 239
Age (in years): Mean (SD)	59.61 (12.49)	44.33 (14.26)	p < 0.001	44.83 (13.97)	44.64 (14.09)	p = 0.87
Sex Female Male	99519 (58.5%) 70581 (41.5%)	210 (86.8%) 32 (13.2%)	p < 0.001	829 (86.6%) 128 (13.7%)	207 (86.6%) 32 (13.4%)	p = 1.00
ECI: Mean (SD)	4.01 (3.25)	4.76 (3.37)	p = 0.27	4.72 (3.35)	4.72 (3.36)	p = 1.00

Significance set to p <0.05.

Matched based on Age, Sex, ECI 4:1 Non-EDS (Ehlers Danlos Syndrome) to EDS

PLF = Posterior Lumbar Fusion