Table 1.
Demographics, clinical characteristics, and medication use
| N = 5938 | |
|---|---|
| Demographics | |
| Sex, n (%) | |
| Female | 3034 (51.1) |
| Male | 2904 (48.9) |
| Age (years)a | |
| N | 5934 |
| Mean (SD) | 48.3 (18.3) |
| Median | 46.3 |
| (Q1-Q3) | (35.0-61.0) |
| Adults (≥18 years old), n (%) | 5782 (97.37) |
| Children (<18 years old), n (%) | 152 (2.56) |
| Missing | 4 |
| Substance useb | |
| Tobacco use, n (%) | 3465 |
| Ex | 1010 (29.15) |
| No | 1091 (31.5) |
| Yes | 1364 (39.36) |
| Missing | 2473 |
| Alcohol use, n (%) | 893 |
| Ex | 81 (9.1) |
| No | 324 (36.3) |
| Yes | 492 (55.1) |
| Missing | 5045 |
| Disease characteristicsb,c | |
| Location, n (%) | |
| L1 ileal | 913 (54.0) |
| L2 colonic | 199 (11.8) |
| L3 ileocolonic | 507 (30.0) |
| L4 isolated upper diseased | 73 (4.3) |
| Missing | 4246 |
| Behavior, n (%) | |
| B1 nonstricturing, nonpenetrating: inflammatory | 589 (48.8) |
| B2 stricturing | 356 (29.5) |
| B3 penetrating | 262 (21.7) |
| Missing | 4731 |
a
Age at registered Crohn’s disease diagnosis.
b
Subjects with missing values are not included in percentage calculations.
c
Based on the Montreal Classification.
d
L4 is a modifier that can be added to L1–L3 when concomitant upper gastrointestinal disease is present.