Novel Closing Method Using Subcutaneous Continuous Drain for Preventing Surgical Site Infections in Radical Cystectomy

Table 1

Patients’ characteristics and incidence of SSI between the two groups.

Characteristics; 𝑛=90	Conventional method 𝑛=63	New method; 𝑛=27	𝑃^∗
Age (yr), mean ± SD	67.9 ± 9.5	68.4 ± 11.0	0.81
BMI (kg/m^2), mean ± SD	23.3 ± 3.5	23.0 ± 3.4	0.74
Op. time (min), mean ± SD	470.8 ± 111.3	472.3 ± 93.0	0.95
Blood loss (mL), mean ± SD	2995.3 ± 2055.8	2364.3 ± 1183.2	0.07
Subcutaneous fat thickness (mm), mean ± SD	17.9 ± 6.8	17.9 ± 8.6	0.97
Male patients, 𝑛 (%)	51 (81.0)	20 (74.1)	0.46
Over weight and obese (BMI ≥ 25), 𝑛 (%)	22 (34.9)	7 (25.9)	0.40
Diabetes mellitus, 𝑛 (%)	14 (22.2)	2 (7.4)	0.13
Smoking, 𝑛 (%)	41 (65.1)	15 (55.6)	0.39
Urinary diversion			0.89
Cutaneostomy, 𝑛 (%)	29 (46.0)	12 (44.4)
Bowel-utilizing diversion, 𝑛 (%)	34 (54.0)	15 (55.6)
SSI, 𝑛 (%)	22 (34.9)	2 (7.4)	<0.01
Superficial	5 (7.9)	0 (0.0)
Deep	14 (22.2)	2 (7.4)
Organ/space	3 (4.8)	0 (0.0)

SSI: surgical site infection; BMI: body mass index; Op. time: operation time
∗P value by 𝑡-test, chi-square test, or Fisher's exact test.