Table 2.

Previous abdominal surgery in relation to index operation for SBO

No previous abdominal operations	Women n = 240	Men n = 162	All n = 402
0	22 (9%)	28 (17%)	50 (12%)
1	106 (44%)	83 (51%)	189 (47%)
2	46 (19%)	35 (22%)	81 (20%)
3	47 (20%)	13 (8%)	60 (15%)
≥4	19 (8%)	3 (2%)	22 (6%)
Type of procedure*
Appendectomy	80 (33%)	35 (22%)	115 (29%)
Colorectal	60 (25%)	50 (31%)	110 (27%)
Gynaecological	106 (44%)	0 (0%)	106 (26%)
Upper GI	69 (29%)	35 (22%)	104 (26%)
Surgery for SBO	17 (7%)	13 (8%)	30 (7%)
Previous surgery within	n = 218	n = 134	n = 352
1 year	47 (22%)	36 (27%)	83 (24%)
1–2 years	8 (4%)	9 (7%)	17 (5%)
2–5 years	22 (10%)	18 (13%)	40 (11%)
>  5 years	141 (65%)	71 (53%)	212 (60%)

*Many patients had several operations, meaning that the total exceeds 100%