TABLE 2.
Frequency distribution of patient age and race/ethnicity among the three principal genetic groups of clinical isolates of M. tuberculosis (n = 676) obtained from Arkansas between 1 January 1996 and 31 December 2000
| Characteristic of patients | No. (%) in group:
|
P valuea | ||
|---|---|---|---|---|
| 1 (n = 63) | 2 (n = 438) | 3 (n = 175) | ||
| Age (yr) | <0.0001 | |||
| 0-14 | 0 (0.0) | 6 (1.4) | 0 (0.0) | |
| 15-24 | 6 (9.5) | 13 (3.0) | 2 (1.1) | |
| 25-44 | 20 (31.8) | 91 (20.8) | 34 (19.4) | |
| 45-64 | 25 (39.7) | 99 (22.6) | 41 (23.4) | |
| 65+ | 12 (19.0) | 229 (52.3) | 98 (56.0) | |
| Race/ethnicity | <0.0001 | |||
| Non-Hispanic white | 26 (41.3) | 252 (57.5) | 101 (57.7) | |
| Non-Hispanic black | 9 (14.3) | 159 (36.3) | 65 (37.1) | |
| Hispanic | 1 (1.6) | 19 (4.3) | 7 (4.0) | |
| Asian/Pacific Islander | 27 (42.9) | 5 (1.1) | 2 (1.1) | |
| American Indian | 0 (0.0) | 3 (0.7) | 0 (0.0) | |
a
P values are from bivariate χ2 test or Fisher's exact test.