Table 1. Baseline demographic data.
| Parameter | Data |
|---|---|
| Gender | |
| Male | 126 (62.1) |
| Female | 77 (37.9) |
| Age (years) | 28 [14–67] |
| Disease duration (months) | 36 [1–300] |
| Biologics therapy | 92 (45.3) |
| Surgery history | 31 (15.3) |
| Isolated small bowel affection | 14 (6.9) |
| CDAI | 232.93±127.7 [26.28–548.19] |
| CRP (mg/L) | 9.4 [1–149] |
| Montreal classification | |
| A (n=203) | |
| 1 (age under 17 years) | 34 (16.7) |
| 2 (age 17–40 years) | 150 (73.9) |
| 3 (age over 40 years) | 19 (9.4) |
| L (n=189)† | |
| 1 (ileum) | 17 (9.0) |
| 2 (colon) | 50 (26.5) |
| 3 (ileocolon) | 122 (64.6) |
| B (n=203) | |
| 1 (nonstricturing or penetrating) | 87 (42.9) |
| 2 (stricturing) | 57 (28.1) |
| 3 (penetrating) | 44 (21.7) |
| 2 + 3 (stricturing and penetrating) | 15 (7.4) |
| Endoscopic scores (n=203) | |
| SES-CD (n=158) | 3 [0–12] |
| Rutgeerts score (n=31) | 1 [0–4] |
| Lewis (n=14) | 1,559 [0–3,721] |
| Endoscopic activity (n=189)†,‡ | |
| Remission | 93 (49.2) |
| Mild-to-moderate activity | 76 (40.2) |
| Severe activity | 20 (10.6) |
| Ultrasound scores (n=203) | |
| IBUS-SAS | 30 [8–95] |
| SUS-CD | 3 [0–5] |
| Simple US Score | 6 [2–14] |
| UCS | 6 [2–18] |
| BUSS | 5.4 [1.5–10.65] |
| The most-affected segment in ultrasound | |
| Small bowel | 14 (6.9) |
| Terminal ileum | 22 (10.8) |
| Cecum and ascending colon | 53 (26.1) |
| Transverse colon | 5 (2.5) |
| Descending and sigmoid colon | 42 (20.7) |
| Ileocolonic anastomosis | 17 (8.4) |
| No active finding in ultrasound | 50 (24.6) |
Data are presented as n (%), median [range], or mean ± standard deviation [range]. †, the sample size excludes patients with isolated small bowel involvement (n=14); ‡, the endoscopic activity was defined by SES-CD and Rutgeerts score but not the Lewis score. CDAI, Crohn’s Disease Activity Index; CRP, C-reactive protein; SES-CD, Simple Endoscopic Score for Crohn’s Disease; IBUS-SAS, International Bowel Ultrasound Segmental Activity Score; SUS-CD, Simple Ultrasound Score for Crohn’s Disease; Simple US Score, Simple Ultrasound Score; UCS, Ultrasound Consolidated Score; BUSS, Bowel Ultrasound Score.