Table 1 Baseline characteristics of patients who were diagnosed with rectal cancer in Sweden 2012–2018 and underwent surgical resection MIS vs OPEN

Age in year, median (IQR)

70 (63.0, 77.0)

69 (61.5, 76.5)

0.316

missing

0 (0)

2 (0.03)

Male sex

2,081 (57.8)

3,690 (62.9)

 < 0.001

ASA^a I-II/ASA^a III-V,

2,763 (76.7)/782 (21.7)

4,180 (71.3)/1607 (27.4)

 < 0.001

missing

56 (1.6)

76 (1.3)

BMI^b, median (IQR)

25.5 (22.9, 28.1)

25.6 (28.3, 33.7)

0.512

missing

51 (0.1)

117 (1.9)

Tumour height^c

0.247

 Low, < 5 cm

744 (20.7)

1,218 (20.8)

 Middle, 5–10 cm

1,295 (36.0)

2,176 (37.1)

 High, 10-15 cm

1,539 (42.7)

2,390 (40.8)

 missing

23 (0.6)

79 (1.3)

cT stage^d

 < 0.001

 T1-T2

1,152 (32.0)

1,343 (22.9)

 T3

1,975 (54.8)

3,037 (51.8)

 T4

399 (11.1)

1,294 (22.1)

 missing

75 (2.1)

189 (3.2)

cN stage^e

 < 0.001

 N0

1,573 (43.7)

2,130 (36.3)

 N1-N2

1,971 (54.7)

3,492 (59.6)

 missing

57 (1.6)

241 (4.1)

cTNM^f

 < 0.001

 I

809 (22.5)

886 (15.1)

 II

675 (18.7)

1,073 (18.3)

 III

1,817 (50.6)

3,007 (51.3)

 IV

199 (5.5)

599 (10.2)

 missing

101 (2.8)

298 (5.1)

Pre-operative treatment

 < 0.001

 No treatment

1,327 (36.8)

1,754 (29.9)

 Radiation only

1,682 (46.7)

2,406 (41.0)

 Radiochemotherapy

571 (15.9)

1,638 (27.9)

 Chemotherapy only

16 (0.4)

55 (0.9)

 missing

5 (0.1)

10 (0.2)