Table 2.

Number of participants and non-participants with postoperative adverse outcomes, in total and per type of surgery.

	Participants	Non-participants	p-value
Surgery performed	N = 61	N = 80
As planned	60 (98.4)	77 (96.3)
Irresectable tumour	1 (1.6)	3 (3.7)	0.63
Type of surgery,n (%)
-Gastro-intestinal oncological surgery	44 (72.1)	48 (60.0)
-Gynaecological oncological surgery	7 (11.5)	19 (23.8)
-Other oncological surgery	10 (16.4)	13 (16.3)	0.17
In-hospital
Postoperative ICU,n (%)	13 (21.3)	24 (30.0)	0.33
-Gastro-intestinal	12 (27.3)	21 (43.8)	0.13
-Gynaecological	0	2 (10.5)	1.00
-Other	1 (10.0)	1 (7.7)	1.00
Median length of hospital stays, days (IQR)	8.0 (4.0–21.0)	10.0 (5.0–17.0)	0.92
-Gastro-intestinal	13.0 (7.0–22.0)	15.0 (9.0–20.0)	0.30
-Gynaecological	2.0 (2.0–3.0)	2.0 (2.0–5.0)	0.50
-Other	4.0 (2.5–13.0)	6.0 (4.0–10.5)	0.24
In-hospital complications,an (%)	19 (31.1)	28 (35.0)	0.63
-Gastro-intestinal	16 (36.4)	25 (52.1)	0.13
-Gynaecological	0	1 (5.3)	1.00
-Other	3 (30.0)	2 (15.4)	0.62
In-hospital mortality, n (%)	2 (3.3)	1 (1.3)	0.58
-Gastro-intestinal	1 (2.3)	1 (2.1)	1.00
-Gynaecological	0	0	–
-Other	1 (10.0)	0	0.44
After hospital discharge
Referral skilled nursing facility, n (%)	0	12 (15.2)	0.00*
-Gastro-intestinal	0	6 (12.8)	0.03*
-Gynaecological	0	4 (21.1)	0.55
-Other	0	2 (15.4)	0.50
Complications at home, a, bn (%)	12 (20.3)	17 (21.5)	0.87
-Gastro-intestinal	7 (16.3)	11 (23.4)	0.40
-Gynaecological	1 (14.3)	1 (5.3)	0.47
-Other	4 (44.4)	5 (38.5)	1.00
Unplanned readmissions, bn (%)	9 (15.3)	18 (22.8)	0.27
-Gastro-intestinal	5 (11.6)	13 (27.7)	0.06
-Gynaecological	0	1 (5.3)	1.00
-Other	4 (44.4)	4 (30.8)	0.66

ICU: intensive care unit; IQR: interquartile range; ^⁎Statistically significant, p < 0.05.

^aComplications classified as Clavien–Dindo 2 or higher.

^bComplications and unplanned readmissions within 30 days post-discharge.