Table 3 Comparison of characteristics of contacts whose episode of care start date is six weeks or less after their index case with those of contacts whose episode of care start date is more than six weeks after that of their index case.
From: Transmission events revealed in tuberculosis contact investigations in London
Factor | Number (%) of contacts with short or long time intervals between index case and contact accessing care | p-value | Adjusted odds ratio for investigation being short (95%confidence interval) | ||
|---|---|---|---|---|---|
six weeks or less | More than six weeks | ||||
Total | 142 (51%) | 138 (49%) | N/a | N/a | |
UK-born? | Yes | 78 (55%) | 55 (40%) | <0.01 | 2.03 [1.24, 3.36] |
No | 51 (36%) | 77 (56%) | 1 | ||
No, recent migrant (<2 years) | 13 (9.2%) | 5 (3.7%) | 3.88 [1.29, 11.7] | ||
Ethnicity | Indian | 25 (18%) | 33 (24%) | 0.06 | 1 |
Black-African | 52 (37%) | 33 (24%) | 1.95 [0.98, 3.89] | ||
White | 24 (17%) | 17 (12%) | 1.59 [0.69, 3.62] | ||
Other | 41 (29%) | 55 (40%) | 0.90 [0.46, 1.77] | ||
Sex | Male | 78 (55%) | 73 (53%) | 0.57 | 1.15 [0.71, 1.85] |
Female | 64 (45%) | 65 (47%) | 1 | ||
Site of disease | Pulmonary | 98 (69%) | 87 (63%) | 0.98 | 1.28 [0.78, 2.12] |
Non-pulmonary | 44 (31%) | 51 (37%) | 1 | ||
Social Risk Factor | History of homelessness | 3 (2.1%) | 4 (3.0%) | 0.66 | 0.71 [0.15, 3.28] |
History of imprisonment | 2 (1.4%) | 6 (4.4%) | 0.20 | 0.34 [0.07, 1.74] | |
History of drug use | 7 (5.0%) | 5 (3.7%) | 0.60 | 1.44 [0.44, 4.75] | |
Alcohol mis use | 3 (2.1%) | 4 (3.0%) | 0.56 | 0.63 [0.14, 2.89] | |
Any social risk factor | 11 (7.9%) | 11 (8.4%) | 0.83 | 0.91 [0.38, 2.19] | |
Age | 15 years old or over | 75 (53%) | 99 (72%) | <0.01 | 0.46 [0.28, 0.76] |
Under 15 years old | 67 (47%) | 39 (28%) | 1 | ||
