Table 2. Healthcare utilisation in relation to major postoperative complications, cardiovascular or cerebrovascular complications and anastomotic insufficiency among 390 patients treated with curatively intended oesophagectomy for cancer who survived at least 1 year.

	< 1 year of oesophagectomy						≥ 1 year to 5 years of oesophagectomy
	Inpatient				Outpatient		Inpatient				Outpatient
	Days of in-hospitalisation		Number of hospitalisations		Number of outpatient visits		Days of in-hospitalisation		Number of hospitalisations		Number of outpatient visits
	IRR	95%-CI	IRR	95%-CI	IRR	95%-CI	IRR	95%-CI	IRR	95%-CI	IRR	95%-CI
Complications
No complications	1.0	(reference)	1.0	(reference)	1.0	(reference)	1.0	(reference)	1.0	(reference)	1.0	(reference)
1 complication	1.3	(0.9–2.1)	1.3	(0.9–1.7)	1.1	(0.9–1.3)	1.3	(0.8–2.0)	1.2	(0.8–1.8)	1.1	(0.9–1.5)
>1 complication	1.7	(1.1–2.7)	1.3	(0.9–1.8)	1.2	(1.0–1.4)	1.5	(1.0–2.4)	1.1	(0.7–1.6)	1.2	(0.9–1.6)
Complications other than cardiovascular or cerebrovascular complications	1.6	(1.1–2.4)	1.4	(1.0–1.9)	1.1	(0.9–1.3)	1.3	(0.9–2.0)	1.2	(0.8–1.7)	1.2	(0.9–1.5)
Cardiovascular or cerebrovascular complication(s)	1.4	(0.8–2.2)	1.1	(0.7–1.6)	1.2	(1.0–1.5)	1.5	(0.9–2.5)	1.2	(0.7–1.9)	1.1	(0.8–1.5)
Complications other than anastomotic insufficiency	1.4	(0.9–2.1)	1.2	(0.9–1.7)	1.1	(0.9–1.3)	1.3	(0.9–1.8)	1.2	(0.8–1.6)	1.1	(0.9–1.4)
Anastomotic insufficiency	2.0	(1.1–3.4)	1.4	(0.9–2.2)	1.3	(1.0–1.6)	1.8	(1.0–3.0)	1.2	(0.7–2.0)	1.3	(0.9–1.7)

Adjusted incidence rate ratios^* (IRR) with 95% confidence intervals (CI) are presented.

*Results were adjusted for age, sex, tumour stage, comorbidity, histological type of tumour, hospital volume and neoadjuvant therapy.