Laparoscopic Risk-Reducing Salpingo-Oophorectomy: The Brigham and Women's Experience

Table 5

Operative time (minutes) by patient- and surgical-related factors.

	n *	Mean (SD)	Median (min-max)	𝑃	Linear regression 𝑃-value^†
Operative time (overall)
	346	58.3 (22.6)	55.0 (26.0–197.0)
< 60	221 (63.9%)
60–90	99 (28.6%)
> 90	26 (7.5%)
Operative time by BMI
BMI <30	269	55.8 (20.6)	53.0 (26.0–192.0)	ANOVA 𝑃<0.0001	Referent
30 ≤ BMI ≤ 40	59	65.2 (26.2)	61.0 (29.0–197.0)	Correlation coefficient 𝑟=0.17,𝑃=0.001	0.003
BMI > 40	9	82.1 (35.6)	74.0 (50.0–158.0)		0.004
Operative time by menopause
Pre	180	59.6 (22.9)	56.0 (28.0–197.0)	𝑡-test 𝑃=0.24	0.07
Post	164	56.7 (22.3)	52.0 (26.0–192.0)
Operative time by prior surgical history
Negative	224	56.6 (20.5)	53.5 (28.0–158.0)	𝑡-test 𝑃=0.08	0.89
Positive	121	61.4 (25.8)	55.0 (26.0–197.0)
Operative time by second assist
Resident/intern	240	58.4 (22.8)	55.0 (26.0–197.0)	𝑡-test 𝑃=0.98	0.68
Attend/fellow	97	58.3 (23.0)	54.0 (28.0–138.0)
Operative time by status of adhesions
Absent	282	55.8 (20.0)	53.0 (26.0–197.0)	ANOVA 𝑃=0.001	<0.0001
Present	64	69.0 (29.3)	61.0 (30.0–192.0)
Operative time by energy source
Ligasure	299	57.0 (23.1)	52.0 (26.0–197.0)	𝑡-test 𝑃=0.001	0.23
Gyrus	46	66.3 (17.0)	63.0 (38.0–108.0)
Operative time by entrance into the peritoneal cavity
Veress	315	57.2 (22.5)	54.0 (26.0–197.0)	𝑡-test 𝑃=0.007	0.14
Open	31	68.6 (20.4)	65.0 (42.0–108.0)
Operative time by scope size
5 mm	291	56.7 (23.2)	51.0 (26.0–197.0)	𝑡-test 𝑃=0.0002	0.26
10 mm	54	66.9 (16.3)	63.5 (38.0–108.0)

^∗𝑛: number of patients with nonmissing data for both surgical time and indicated variables.
^†Adjusted for age and year of surgery and each variable in the table.