Demographic characteristics of people with prevalent inflammatory bowel disease and matched people without inflammatory bowel disease, by year
| Characteristic | 1996 | 2000 | 2008 | 2011 | ||||
|---|---|---|---|---|---|---|---|---|
| No. (%) of participants* | ||||||||
| With IBD n = 32 818 | Without IBD n = 163 284 | With IBD n = 44 601 | Without IBD n = 222 126 | With IBD n = 69 559 | Without IBD n = 347 001 | With IBD n = 80 276 | Without IBD n = 401 036 | |
| Age on July 1, yr; mean ± SD | 42.40 ± 16.59 | 42.28 ± 16.51 | 44.21 ± 16.66 | 44.11 ± 16.59 | 47.34 ± 16.86 | 47.27 ± 16.84 | 48.30 ± 16.95 | 48.27 ± 16.94 |
| Age on July 1, yr; median (Qmed1–Qmed3) | 40 (30–53) | 40 (30–53) | 42 (32–55) | 42 (32–55) | 46 (35–59) | 46 (35–58) | 48 (36–60) | 48 (36–60) |
| Female sex | 17 341 (52.8) | 86 142 (52.8) | 23 551 (52.8) | 117 187 (52.8) | 36 508 (52.5) | 181 982 (52.4) | 41 964 (52.3) | 209 606 (52.3) |
| Rural residence† | 4442 (13.5) | 21 415 (13.1) | 5775 (12.9) | 28 013 (12.6) | 8536 (12.3) | 41 905 (12.1) | 9661 (12.0) | 47 961 (12.0) |
| Mean neighbourhood income quintile† | ||||||||
| Q1 (lowest) | 5426 (16.5) | 26 946 (16.5) | 7211 (16.2) | 35 857 (16.1) | 11 082 (15.9) | 55 250 (15.9) | 12 194 (15.2) | 60 905 (15.2) |
| Q2 | 6217 (18.9) | 30 886 (18.9) | 8755 (19.6) | 43 549 (19.6) | 12 850 (18.5) | 64 021 (18.4) | 14 944 (18.6) | 74 638 (18.6) |
| Q3 | 6811 (20.8) | 33 898 (20.8) | 9216 (20.7) | 45 910 (20.7) | 14 109 (20.3) | 70 429 (20.3) | 16 302 (20.3) | 81 444 (20.3) |
| Q4 | 7102 (21.6) | 35 343 (21.6) | 9333 (20.9) | 46 544 (21.0) | 15 551 (22.4) | 77 564 (22.4) | 18 285 (22.8) | 91 361 (22.8) |
| Q5 (highest) | 7262 (22.1) | 36 211 (22.2) | 10 086 (22.6) | 50 266 (22.6) | 15 967 (23.0) | 79 737 (23.0) | 18 551 (23.1) | 92 688 (23.1) |
| Responded to NPHS/CCHS | 88 (0.3) | 434 (0.3) | 158 (0.4) | 790 (0.4) | 238 (0.3) | 1176 (0.3) | NA | NA |
| Type of IBD | ||||||||
| Crohn disease | 16 804 (51.2) | NA | 22 253 (49.9) | NA | 33 411 (48.0) | NA | 37 936 (47.3) | NA |
| Ulcerative colitis | 15 158 (46.2) | NA | 21 042 (47.2) | NA | 33 717 (48.5) | NA | 39 028 (48.6) | NA |
| IBD unclassified | 856 (2.6) | NA | 1306 (2.9) | NA | 2431 (3.5) | NA | 3312 (4.1) | NA |
Note: CCHS = Canadian Community Health Survey, IBD = inflammatory bowel disease, NPHS = National Population Health Survey, NA = not applicable, Qmed1 = first quartile, Qmed3 = third quartile, SD = standard deviation.
↵* Unless specified otherwise.
↵† For survey respondents, rural or urban household and income quintile are as of the date of survey completion; for nonrespondents, rural or urban household and income quintile are as of July 1 of each given year.