Table 2.

Postoperative ultrasonographic measurement of nonoperative and operative rectus abdominis muscle thickness.

	Nonoperative (mm), mean ± SD	Operative (mm), mean ± SD	Mean difference ± SE (mm)	95% CI (mm)	P value*
Umbilicus level	8.14 ± 1.43	8.16 ± 1.83	−0.02 ± 0.31	−0.65–0.60	.94
ASIS level	8.04 ± 1.84	7.74 ± 1.85	−0.31 ± 0.32	−0.35–0.97	.35

ASIS = anterior superior iliac spine, CI = confidence interval, SD = standard deviation, SE = standard error.

^*Paired t test.