Table 1.
Demographic Profile of Inflammatory Bowel Disease Patients in São Paulo City, Brazil
| Total (n=658) | CD (n=303) | UC (n=355) | p | |
|---|---|---|---|---|
| Age at diagnosis (years) | ||||
| Mean ± SD | 33.8 ± 14.8 | 32 ± 14.5 | 35.3 ± 14.9 | 0.004* |
| Sex | ||||
| Female | 371 (56.4) | 152 (50.2) | 219 (61.7) | 0.003* |
| Residence | ||||
| São Paulo City | 508 (77.4) | 224 (73.9) | 284 (80.5) | 0.046* |
| Ethnicity | ||||
| Caucasian | 402 (61.5) | 199 (66.1) | 203 (57.5) | 0.157 |
| Mixed-race | 221 (33.8) | 89 (29.6) | 132 (37.4) | |
| African descent | 28 (4.3) | 12 (4) | 16 (4.5) | |
| Asian descent | 3 (0.5) | 1 (0.3) | 2 (0.6) | |
| Missing data | 4 | 2 | 2 | |
| Education (years of schooling) | ||||
| Uneducated and < 12 years | 348 (54) | 147 (49.3) | 201 (58.1) | 0.026* |
| ≧12 years | 296 (46) | 151 (50.7) | 145 (41.9) | |
| Missing data | 14 | 5 | 9 |
Notes: Quantitative variables: Student’s t-test (normal distribution); categorical variables: χ2 test; * p < 0.05 = statistical significance.
Abbreviations: CD, Crohn’s disease; UC, ulcerative colitis; SD, standard deviation.