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. 2024 Feb 21;159(5):484–492. doi: 10.1001/jamasurg.2023.7985

Table 3. Analysis of the Primary End Point With the Subdistributional Fine-Gray Hazard Modela.

Variable HR (95% CI) P value
Treatment group
No irrigation vs polyhexanide 1.23 (0.64-2.36) .54
Saline vs polyhexanide 1.19 (0.74-1.94) .47
Level of contamination
III or IV vs I or II 1.63 (0.76-3.49) .21
BMIb
18.5-<25 1.51 (0.38-5.95) .56
25-<30 1.22 (0.31-4.82) .77
≥30 1.14 (0.28-4.72) .86

Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); HR, hazard ratio.

a

Surgical site infection was the main event; relaparotomy and death were competing risks; and treatment group, level of contamination, and BMI class were covariates.

b

Compared to BMI <18.5.