Use of the vertebrae and iliac bone as references for localizing the appendix vermiformis in computed tomography

Table 3 Ap0, ApA, and ApB relative to the highest point of the right iliac bone in male and female patients, mm

Sex	Ap0 (mean ± SD)	ApA (mean ± SD)	ApB (mean ± SD)
Female (n = 206)	(−) 48.1 ± 30.0	(−) 26.2 ± 30.4	(−) 60.4 ± 31.1
Male (n = 221)	(−) 34.3 ± 29.7	(−) 20.0 ± 29.8	(−) 59.6 ± 30.8
Total (n = 427)	(−) 41.0 ± 32.7	(−) 23.0 ± 30.8	(−) 60.0 ± 30.2

No significant statistical difference was found between male and female patients in the measurements of ApA and ApB relative to the right iliac bone (P = 0.08 and P = 0.21; respectively). A significant difference was found between male and female patients in the measurements of Ap0 relative to the right iliac bone (P = 0.03).