Table 4.

Wear particle size (ECD) statistics evaluated at the 0.5 Mc (run-in) and 2 Mc (steady-state) time points. All values are given in nm.

	0.5 Mc (Run-in)			2 Mc (Steady-state)
	ISO	AP-L	AP-H	ISO	AP-L	AP-H
Mean	189.3	171.2	176.9	174.6	167.7	184.6
Std. Dev.	155.2	131.2	164.4	137.2	140.7	137.9
99% CI Low*	182.5	165.9	171.0	169.6	161.2	178.9
99% CI High*	196.4	176.6	183.0	179.7	174.4	190.6
p Value - 2 Mc vs. 0.5 Mc means**				<0.001	<0.001	<0.001

^*Confidence interval for the mean, calculated on the log-transformed data and back transformed to the original scale.

^**The p-values were calculated using 2-tailed t-tests on the log-transformed data. As a result, overlap in the 99% CIs may occur in the original scale, even though the p value is below 0.001.