Table 4.

Principal component analysis of age-adjusted, log-transformed thresholds for all subjects.

	First	Second	Third	Fourth	Fifth
Contribution (%)	52	15	13	10	10
Yaw	0.38	0.84	−0.29	−0.22	0.15
Y	0.43	0.03	0.85	−0.28	−0.07
Z	0.48	0.05	0.00	0.82	−0.30
Roll tilt 1 Hz	0.47	−0.40	−0.15	0.03	0.77
Roll tilt 0.2 Hz	0.46	−0.38	−0.41	−0.45	−0.53

The component with the largest contribution is shown in bold.