Table 1.
Demographic data and disease characteristics of patients
| Group LME (n = 60) | Group EME (n = 66) | P value | |
| Male sex, n (%) | 47 (78.3) | 42 (63.6) | 0.07 |
| Age of onset, mean ± SD, yr | 26.85 ± 10.82 | 25.23 ± 9.71 | 0.38 |
| Age at the index surgery, mean ± SD, yr | 31.15 ± 10.36 | 30.42 ± 10.15 | 0.69 |
| Duration of disease, mean ± SD, mo | 51.19 ± 49.36 | 61.61 ± 52.19 | 0.25 |
| BMI, mean ± SD, kg/m2 | 18.48 ± 3.19 | 18.04 ± 2.49 | 0.48 |
| Surgery history, n (%) | 6 (10.0) | 1 (1.5) | 0.09 |
| Smoking history, n (%) | 9 (15.0) | 5 (7.6) | 0.19 |
| Preoperative medication, n (%) | 32 (53.3) | 38 (57.6) | 0.63 |
| Immunosuppressants | 19 (31.7) | 23 (34.8) | 0.71 |
| Infliximab | 4 (7.1) | 4 (6.3) | 1.00 |
| Corticosteroids | 21 (35.0) | 25 (37.9) | 0.74 |
| Age at diagnosis, n (%), yr | 0.51 | ||
| A1 ≤16 | 7 (11.7) | 4 (6.1) | 0.27 |
| A2 17-40 | 44 (73.3) | 50 (75.8) | 0.76 |
| A3 > 40 | 12 (15.0) | 12 (18.2) | 0.80 |
| Disease location, n (%) | 0.32 | ||
| L2 (colonic) | 32 (53.3) | 41 (62.1) | 0.32 |
| L3 (ileocolonic) | 28 (46.7) | 25 (37.9) | 0.32 |
| L4 (upper tract) | 1 (1.7) | 4 (6.1) | 0.42 |
| Disease behavior, n (%) | 0.002 | ||
| B1 | 0 (0) | 3 (4.5) | 0.28 |
| B2 | 20 (33.3) | 39 (59.1) | 0.004 |
| B3 | 40 (66.7) | 24 (36.4) | 0.001 |
| P | 25 (41.7) | 22 (33.3) | 0.33 |
| ASA score, n (%) | 0.47 | ||
| ≥3 | 10 (16.7) | 8 (12.1) | |
| <3 | 50 (83.3) | 58 (87.9) | |
| Preoperative CRP, mean ± SD, mg/L | 16.10 ± 27.77 | 12.60 ± 23.12 | 0.30 |
| Preoperative albumin, mean ± SD, g/L | 37.11 ± 4.99 | 37.28 ± 5.91 | 0.50 |
| Postoperative medicine prophylaxis, n (%) | 30 (50.0) | 40 (60.6) | 0.23 |
| Immunosuppressants | 29 (48.3) | 38 (57.6) | 0.30 |
| Biologics | 2 (3.3) | 4 (6.1) | 0.77 |
| No immunosuppressants or biologics, n (%) | 30 (50.0) | 26 (39.4) | 0.23 |
| Site of colorectal surgery, n (%) | 0.22 | ||
| Right hemicolectomy | 26 (43.3) | 32 (48.5) | 0.56 |
| Transverse colectomy | 4 (6.7) | 3 (4.5) | 0.90 |
| Left hemicolectomy | 21 (35.0) | 14 (21.2) | 0.08 |
| Proctectomy | 2 (3.3) | 1 (1.5) | 0.93 |
| Total colectomy | 7 (11.7) | 16 (24.2) | 0.07 |
| Stoma creation, n (%) | 14 (23.3) | 11 (16.7) | 0.35 |
| Terminal ileum | 8 (57.1) | 9 (81.8) | 0.38 |
| Ascending colon | 0 (0) | 1 (9.1) | 0.44 |
| Transverse colon | 3 (21.4) | 0 (0) | 0.31 |
| Descending colon | 3 (21.4) | 1 (9.1) | 0.78 |
| Microscopic resection margin positive, n (%) | |||
| Proximal margin | 4 (8.7) | 4 (7.3) | 1.00 |
| Distal margin | 3 (6.5) | 4 (7.3) | 1.00 |
| Stoma margin | 1 (7.1) | 1 (9.1) | 1.00 |
ASA, American Society of Anesthesiologists; BMI, body mass index (calculated as weight in kilograms divided by height in m2); CRP, C-reactive protein; EME, extensive mesenteric excision; LME, limited mesenteric excision.