Table 1.

Patient demographics (BMI, body mass index; ASA, American Society of Anesthesiologists Physical Status System; ns, not specified; TaTME, transanal total mesorectal excision)

		Study cohort
		TaTME patients
		n	%
Sex	Male	272	72.0
	Female	106	28.0
Age at diagnosis (years)	< 50	62	16.4
	50–59	107	28.3
	60–69	111	29.4
	70–79	84	22.2
	≥ 80	14	3.7
BMI (kgm−2)	< 20 (underweight)	18	4.8
	20–25 (normal weight)	140	37.0
	25–30 (overweight)	128	33.9
	≥ 0 (obese)	83	22.0
	ns	9	2.4
ASA	I	23	6.1
	II	246	65.1
	III	95	25.1
	IV	8	2.1
	ns	6	1.6
	Total	378	100.0