Table 2.

Intraoperative and one month postoperative clinical outcomes. Values are numbers (percentages) unless stated otherwise

Outcome	RVHR (n=65)	LVHR (n=58)	P value	Relative rate (95% CI)*
Median days in hospital at 90 days	0	0	0.82	0.90 (0.37 to 2.19)
Postoperative length of stay	0	0
Readmissions length of stay	0	0
Days in hospital at 90 days (categories):			0.28	-
0 days	50 (77)	49 (84)
1 day	9 (14)	4 (7)
2 days	4 (6)	1 (2)
>3 days	2 (3)	4 (7)
Mean (SD) operating room duration, min	141 (56)	77 (37)	<0.001	62.89† (45.75 to 80.01)
Wound class 2-4	2 (3)	0 (0)	0.50	‡
Conversion to open repair	1 (2)	1 (2)	0.84	0.76 (0.05 to 11.47)
Patients readmitted	1 (2)	3 (5)	0.25	0.27 (0.03 to 2.43)
Patients with emergency room visits	7 (11)	5 (9)	0.66	1.28 (0.43 to 3.75)
Wound complication:	13 (20)	11 (19)	0.95	1.02 (0.51 to 2.08)
Surgical site infection	0 (0)	1 (2)	1.00
Seroma	13 (20)	8 (14)	0.40
Hematoma	0 (0)	2 (3)	1.00
Recurrence	0 (0)	0 (0)	1.00	‡
Reoperation	0 (0)	1 (2)	1.00	‡
Clavien-Dindo complications:	14 (22)	11 (19)	0.80	1.10 (0.54 to 2.24)
1-2	14 (22)	10 (17)
3-5	0 (0)	1 (2)§
Mean (SD) costs, US$	15 865 (4879)	12 955 (5636)	0.004	1.21¶ (1.07 to 1.38)

LVHR=laparoscopic ventral hernia repair; RVHR=robotic ventral hernia repair.

^*LVHR is control for relative rate calculation.

^†Mean differences are reported instead of relative rate as variable is continuous and was analyzed with generalized linear model.

^‡Relative rate could not be calculated as no observations in one arm.

^§Represents incision and drainage of abdominal wall seroma.

^¶Cost ratio is reported instead of relative rate. Adjusted absolute cost difference was $2767 (95% CI $910 to $4626).