Table 5.

Multivariate regression analysis using the three risk groups of the BETTY score to predict postoperative outcomes.

		Low Risk BETTY ≥ 12 (n = 275)	Intermediate Risk BETTY 7–11 (n = 20)	High Risk BETTY ≤ 6 (n = 2)
Any complication	Rate (%)	25%	65%	100%
	Adjusted OR (95% CI)	Ref.	5.3 (2–15)	N/A
	p	Ref.	<0.001	N/A
High-grade complication (CD ≥ 3)	Rate (%)	2.5%	30%	100%
	Adjusted OR (95% CI)	Ref.	16 (4.7–56)	N/A
	p	Ref.	<0.001	N/A
Length of hospital stay, days	Median	1	1.5	1.5
	Adjusted OR (95% CI)	Ref.	2.72 (1.01–6.97)	N/A
	p	Ref.	0.04	N/A
Unplanned visit	Rate (%)	14.9%	40%	100%
	Adjusted OR (95% CI)	Ref.	3.5 (1.3–9)	N/A
	p	Ref.	0.01	N/A
Unplanned readmission	Rate (%)	9%	40%	100%
	Adjusted OR (95% CI)	Ref.	6 (2.1–16)	N/A
	p	Ref.	<0.001	N/A

Legend: OR: odds ratio; CI: confidence interval; CD: Clavien–Dindo; N/A: not available.