TABLE 2.
Characteristics of clustered and nonclustered tuberculosis patients in Alabama (1994 to 2000) who were infected with M. tuberculosis strains harboring <6 IS6110 insertion sequences (LCS cohort)
| Characteristic | No. of patients with characteristic or mean age (yr) ± SD | % of patients in cluster | Pa | OR (95% CI)b |
|
|---|---|---|---|---|---|
| Crude | Age adjusted | ||||
| Type | <0.0001 | ||||
| Clustered | 48 ± 19 | ||||
| Nonclustered | 59 ± 20 | ||||
| Gender | |||||
| Male | 442 | 67 | 1.5 (1.0-2.1) | 1.5 (1.0-2.2) | |
| Female | 181 | 58 | 1 | 1 | |
| Race | |||||
| Black | 375 | 73 | 2.3 (1.6-3.2) | 1.7 (1.2-2.5) | |
| White | 226 | 54 | 1 | 1 | |
| Other | 22 | 32 | 0.4 (0.2-1.0) | 0.3 (0.1-0.7) | |
| Residence within city limits | |||||
| Yes | 531 | 65 | 1.2 (0.8-1.9) | 0.8 (0.5-1.3) | |
| No | 92 | 61 | 1 | 1 | |
a
As determined by the Student t test.
b
As determined by the chi-square test.