Table 7.

Comparison of Rib Distance-to-Thoracic Width Ratios

Variable	Measurement	Minimum	Maximum	Mean	SD	F	P
Rib distance-to-thoracic width ratio	Distance-R10*	0.72	0.97	0.83	0.06
	Distance-R11†	0.69	0.87	0.79	0.05
	Distance-R12‡	0.64	0.77	0.70	0.03	177.24	0.0001

*

†

^‡Applying analysis of variance/Bonferroni mean differences.

F, test variation.