Comparison of characteristics of cases that were included and excluded in the analyses. Percentages are within-group column percentages with the exception of the total row, where row percentages are given. Within-group totals may be discrepant to the stated total due to cases with missing data
| Factor | Index cases with all forms of TB | Index cases with pulmonary TB | ||
|---|---|---|---|---|
| Number included (%) | Number excluded (%) | Number included (%) | Number excluded (%) | |
| Total | 5491 (56%) | 4330 (44%) | 2716 (60%) | 1845 (40%) |
| UK-born? | ||||
| Yes | 830 (19%) | 943 (17%) | 622 (23%) | 500 (27%) |
| No | 2880 (67%) | 3862 (70%) | 1744 (64%) | 1093 (60%) |
| No, recent migrant (<2 years) | 578 (13%) | 674 (12%) | 344 (13%) | 233 (13%) |
| Ethnicity | ||||
| Bangladeshi | 257 (5%) | 317 (7%) | 105 (4%) | 85 (5%) |
| Black-African | 1278 (23%) | 726 (17%) | 608 (22%) | 361 (20%) |
| Black-Caribbean | 208 (4%) | 118 (3%) | 116 (4%) | 66 (4%) |
| Black-Other | 82 (2%) | 58 (1%) | 40 (2%) | 29 (2%) |
| Chinese | 81 (1%) | 37 (1%) | 52 (2%) | 19 (1%) |
| Indian | 1330 (24%) | 1434 (33%) | 510 (19%) | 461 (25%) |
| Pakistani | 976 (18%) | 607 (14%) | 496 (18%) | 290 (16%) |
| White | 498 (9%) | 525 (12%) | 201 (7%) | 189 (10%) |
| Other | 758 (14%) | 476 (11%) | 578 (21%) | 330 (18%) |
| Sex | ||||
| Male | 3287 (60%) | 2537 (59%) | 1704 (63%) | 1122 (61%) |
| Female | 2204 (40%) | 1793 (41%) | 1012 (37%) | 723 (39%) |
| Site of disease | ||||
| Pulmonary or laryngeal | 2548 (46%) | 2018 (47%) | N/a | N/a |
| Non-pulmonary and non-laryngeal | 2943 (54%) | 2312 (53%) | N/a | N/a |
| Social risk factor | ||||
| History of homelessness | 230 (4%) | 130 (3%) | 187 (7%) | 90 (5%) |
| History of imprisonment | 127 (2%) | 76 (2%) | 105 (4%) | 50 (3%) |
| History of drug use | 229 (4%) | 141 (3%) | 179 (7%) | 101 (6%) |
| BCG vaccinated | ||||
| Yes | 3136 (58%) | 2627 (61%) | 1541 (58%) | 1115 (61%) |
| No | 1117 (21%) | 848 (19%) | 568 (21%) | 354 (19%) |
| Unknown | 1129 (21%) | 800 (19%) | 563 (21%) | 351 (19%) |
| Age | ||||
| 15 years old or over | 5367 (98%) | 4046 (93%) | 2641 (97%) | 1658 (90%) |
| Under 15 years old | 124 (2%) | 284 (7%) | 75 (3%) | 187 (10%) |
| Home visits policy | ||||
| Yes | 1179 (32%) | 369 (9%) | 907 (33%) | 230 (13%) |
| No | 3712 (68%) | 3927 (91%) | 1801 (67%) | 1593 (87%) |