Table 1.

Differences between patient cohorts

	n	Procedure codes (n)	Age (years)	Procedure duration (min)	Length of hospital stay (days)	Rate of ICU admission (%)
Real-world data analysis
MAS	3880	73	59 (55–65)	189 (145–268)	8 (6–10)	78 (59–92)
Non-MAS	12 473	141	51 (41–60)	70 (42–125)	1 (0–5)	4 (0–27)
Unsupervised machine learning
Cluster 1 (MAS)	3628	51	60 (57–65)	190 (139–258)	9 (7–11)	79 (58–89)
Cluster 2 (non-MAS)	12 408	76	50 (43–54)	58 (39–96)	1 (0–2)	4 (0–12)

Values are median (i.q.r.). MAS, major abdominal surgery.