Cost-effectiveness of the prevention of adhesions and adhesive small bowel obstruction after colorectal surgery with adhesion barriers: a modelling study

Table 1 Input probabilities in decision-tree model

	Open			Laparoscopic				Adhesion barrier strategy
Variable	Probability	α	β	Probability	α	β	Source (reference)	RR	95% CI	Source (reference)
Patients with adhesions	0.889	80	10	0.623	38	23	[19]	0.51	0.43–0.61	[8, 20,21,22]
Patients with ASBO 4 years	0.0856	199	2127	0.0663	77	1085	[23,24,25,26,27,28,29,30]	0.68	0.35–1.32	[8, 20,21,22]
Patients with ASBO treated surgically	0.032	74	2252	0.031	36	1126	[23,24,25,26,27,28,29,30]	0.49	0.28–0.88	[8, 20,21,22]
Patients with repeat surgery 4 years	0.208	64	200	0.209	64	200	[31]

α patients with event, β patients without event, RR relative risk, CI confidence interval, ASBO adhesive small bowel obstruction

ISSN: 1749-7922