Table 3.

Average lower extremity joint contracture angles, estimated using a generalized estimating equation

Ambulatory status	Joint	Estimated average values (confidence interval)	p-value*	p-value**
Ambulatory	Hip	1.5 (0.5–2.5)		<.0001
	Knee	3.1 (1.6–4.7)	.092	<.0001
	Ankle	6.4 (4.6–8.2)	<.0001	<.0001
Non-ambulatory	Hip	23.5 (20.4–26.6)
	Knee	43.5 (36.5–50.4)	<.0001
	Ankle	34.5 (28.6–40.3)	.001

^*Corrected p-values for comparisons of other ankle and knee joint contracture angles with that of the hip joint

^**Corrected p-value for comparisons of the joint contracture angles, depending on ambulatory status