TABLE I.

Comparison between the control and out-of-control samples.

	Acrylic	Water	Lung	Inside air	Outside air
p-values for location	<0.0001	<0.0001	0.1399	0.0368	0.0954
p-values for scale	0.0657	0.0404	0.1245	0.1210	0.2012
Mean difference in location (medDif) (HU)	0.0719	−0.2370	0.0233	0.0591	0.0168
Mean ratio in scale (madDif)	1.1299	1.2501	1.4162	1.4536	1.3652