Table 1.
Characteristics of Cohort at Time of Index Date, Total Follow-up in Person-years, and Number of Active Tuberculosis Cases Diagnosed in British Columbia
| Characteristic | Number of People (%) | Total Person-years in BC, in 1000s | Number of Active TB Cases |
|---|---|---|---|
| All | 1 080 908 | 11 640 | 2814 |
| Age group, years | |||
| 0–5 | 59 070 (5.5) | 670 | 31 |
| 6–20 | 241 145 (22.3) | 2695 | 368 |
| 21–35 | 377 275 (34.9) | 4038 | 929 |
| 36–50 | 271 122 (25.1) | 2828 | 586 |
| 51–65 | 95 025 (8.8) | 1056 | 566 |
| >65 | 37 271 (3.6) | 353 | 334 |
| Gender | |||
| Female | 553 976 (51.3) | 6071 | 1391 |
| Male | 526 932 (48.8) | 5569 | 1423 |
| Immigration class | |||
| Economic | 637 775 (59.0) | 6489 | 942 |
| Refugee | 86 803 (8.0) | 1069 | 362 |
| Family | 326 106 (30.2) | 3723 | 1387 |
| Other | 30 224 (2.8) | 359 | 123 |
| WHO region, country of origina | |||
| Southeast Asia | 153 061 (14.2) | 1631 | 698 |
| Africa | 31 161 (2.9) | 320 | 101 |
| Western Pacific | 586 669 (54.3) | 6476 | 1773 |
| Eastern Mediterranean | 84 057 (7.8) | 778 | 134 |
| The Americas | 80 297 (7.4) | 839 | 49 |
| Europe | 145 661 (13.5) | 1595 | 59 |
| TB rate, country of origina,b | |||
| 0–30 | 186 165 (17.2) | 1733 | 37 |
| 31–100 | 278 081 (25.7) | 2582 | 249 |
| 101–200 | 340 901 (31.5) | 4067 | 952 |
| >200 | 275 759 (25.5) | 3257 | 1576 |
| Cohort entry (index year) | |||
| 1985–1994 | 299 501 (27.7) | 5051 | 1386 |
| 1995–2004 | 443 941 (41.1) | 5032 | 1084 |
| 2005–2013 | 337 466 (31.2) | 1556 | 344 |
Abbreviations: BC, British Columbia; TB, tuberculosis; WHO, World Health Organization.
aCountry of birth missing (n = 2).
bWHO-estimated annual number of active TB cases, per 100 000 population, in year of index date.