Table 1.

Components of aggregated length of hospital stay

	No. of patients	Median index LOS*, †	Transfer stay		Readmission stay		Median (i.q.r.) a‐LOS*
			% transferred	Median LOS*	% readmitted	Median LOS*
Oesophageal resections
Laparoscopic	235	15	28·5	7	8·9	1	18 (14–24)
Open	271	15	37·3	6	10·3	3	20 (14–30)
Converted	2	19·5	50	5	0	–	22 (14–30)
Total	508	15	33·3	6	9·6	2	18 (14–30)
Whipple procedures
Open	930	9	56·8	5	12·4	4	14 (10–21)
Total	930	9	56·8	5	12·4	4	14 (10–21)
Rectal resections
Laparoscopic	2294	6	11·4	5	12·6	4	6 (4–11)
Open	4211	8	15·4	6	14·6	3	10 (7–16)
Converted	67	7	24	6	16	2	10 (7–14)
Total	6572	7	14·1	6	13·9	3·5	9 (6–14)
Gastric resections
Laparoscopic	246	6	22·0	4	9·3	7	8 (5–13)
Open	904	9	32·2	6	11·8	4	12 (8–19·5)
Converted	7	7	43	14	29	9	13 (6–27)
Total	1157	8	30·1	6	11·4	4	11 (7–18)
Distal pancreatic resections
Laparoscopic	323	5	24·1	4	20·1	5	7 (5–11)
Open	215	9	25·1	6	18·6	4·5	13 (8–19)
Converted	8	6	38	4	25	4	9 (7–9·5)
Total	546	7	24·7	5	19·6	5	9 (5–14)
Colonic resections
Laparoscopic	5494	4	4·7	5	9·3	3	5 (3–7)
Open	6820	7	9·5	6	11·4	4	8 (6–13)
Converted	179	6	9·5	4	11·7	3	7 (5–11)
Total	12 493	6	7·4	6	10·5	4	6 (4–10)
Major liver resections
Laparoscopic	37	5	24	4	27	2	5 (3–16)
Open	564	8	51·1	5	14·5	4	12 (8–19·5)
Converted	6	5	50	6	17	7	7·5 (5–12)
Total	607	8	49·4	5	15·3	3	12 (8–19)
Minor liver resections
Laparoscopic	522	2	15·7	3	12·8	4	3 (2–5)
Open	1005	6	32·8	4	13·4	3	8 (5–12)
Converted	14	4	29	3·5	0	–	5 (3–8)
Total	1541	4	27·0	4	13·1	4	6 (3–10)
Total liver resections
Laparoscopic	559	2	16·3	3	13·8	4	3 (2–5)
Open	1569	7	39·4	4	13·8	3	9 (6–14)
Converted	20	5	35	4	5	7	5 (3·5–10)
Total	2148	5	33·3	4	13·7	4	7 (4–13)
Total resections
Laparoscopic	9151	5	8·9	4	10·8	4	5 (3–9)
Open	14 920	8	19·3	6	12·7	4	9 (6–15)
Converted	283	6	16·6	5	13·1	2	8 (6–12)
Total	24 354	7	15·4	5	12·0	4	8 (5–13)

^*Stays are measured as number of nights in hospital;

^†index stay is from date of surgery. LOS, length of hospital stay; i.q.r., interquartile range; a‐LOS, ‘aggregated’ length of stay.