Table 6. Simple linear regression parameters between joint range of motion and age for each of the joints that are known to be predominantly affected in patients with MPS II.

Joint		All values	Pa
	N	Parameter estimate (SE)
Shoulder flexion	108	−0.36 (0.27)	0.181
Shoulder abduction	117	−0.77 (0.23)	<0.001
Hip flexion, knee bent	105	−0.83b (0.22)	<0.001
Hip extension	96	−0.46c (0.21)	0.030
Hip internal rotation	78	−0.59 (0.14)	<0.001

SE, standard error.

^aP value based on t-test for the hypothesis: parameter estimate = 0.

^bParameter estimate = −0.87 (SE, 0.15) when excluding outliers.

^cParameter estimate = −0.33 (SE, 0.18) when excluding the outlier.