Table 3.

Comparison of Hysterectomy Total Costs by Surgeon Type in Cost Units

Hysterectomy Route	Transformation Used	Open Surgeon Costs, Mean ± SD	Open n	Laparoscopic Surgeon Costs, Mean ± SD	Laparoscopic n	Robotic Surgeon Costs, Mean ± SD	Robotic n	ANOVA P Value
Robotic	Natural logarithm	1.736 ± 0.671	41	1.652 ± 0.415	67	1.669 ± 0.607	466	.753
Robotic	Outlier elimination	1.511 ± 0.340	35	1.588 ± 0.290	62	1.640 ± 0.400	414	.119
Laparoscopic	Natural logarithm	1.084 ± 0.451	145	1.013 ± 0.378	2,162	1.278 ± 0.517	100	<.001*
Laparoscopic	Outlier elimination	1.065 ± 0.294	126	0.982 ± 0.263	1,968	1.197 ± 0.321	76	<0.001†

^*Subsequent post hoc tests: open versus laparoscopic, P = .483; open versus robotic, P = .032; laparoscopic versus robotic, P < .001.

^†Subsequent post hoc tests: open versus laparoscopic, P = .007; open versus robotic, P = .012; laparoscopic versus robotic, P < .001.