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Table 2 Previous abdominal surgery in relation to index operation for SBO

From: Mechanisms of adhesive small bowel obstruction and outcome of surgery; a population-based study

No previous abdominal operationsWomen n = 240Men n = 162All n = 402
 022 (9%)28 (17%)50 (12%)
 1106 (44%)83 (51%)189 (47%)
 246 (19%)35 (22%)81 (20%)
 347 (20%)13 (8%)60 (15%)
 ≥419 (8%)3 (2%)22 (6%)
Type of procedure*
 Appendectomy80 (33%)35 (22%)115 (29%)
 Colorectal60 (25%)50 (31%)110 (27%)
 Gynaecological106 (44%)0 (0%)106 (26%)
 Upper GI69 (29%)35 (22%)104 (26%)
 Surgery for SBO17 (7%)13 (8%)30 (7%)
Previous surgery withinn = 218n = 134n = 352
 1 year47 (22%)36 (27%)83 (24%)
 1–2 years8 (4%)9 (7%)17 (5%)
 2–5 years22 (10%)18 (13%)40 (11%)
 >  5 years141 (65%)71 (53%)212 (60%)
  1. *Many patients had several operations, meaning that the total exceeds 100%