Table 1.
Demographic, clinical, and laboratory characteristics of the study population
| Characteristic | Value |
P valuea | |||
|---|---|---|---|---|---|
| Extrapulmonary TB (n = 7) | Pulmonary TB (n = 18) | Latent M. tuberculosis infection (n = 17) | No latent M. tuberculosis infection (n = 18) | ||
| Age (yr)b | 53 (26–70) | 47 (40–59) | 43 (36–48) | 42 (32–50) | 0.44 |
| No. (%) of male subjects | 3 (43) | 11 (61) | 6 (35) | 8 (44) | 0.48 |
| No. (%) of Hispanic subjects | 1 (14) | 2 (11) | 0 (0) | 1 (5) | 0.48 |
| No. (%) of black subjects | 3 (43) | 8 (44) | 2 (12) | 3 (17) | 0.01 |
| No. (%) of subjects who smoked | 1 (14.3) | 10 (55) | 5 (29) | 5 (28) | 0.12 |
| Time from end of treatment to blood draw (mo)b | 12 (6–25) | 1 (0–8) | 15 (1.5–26) | NA | 0.02 |
| Cell count (per mm3)b | |||||
| WBC | 5,900 (4,900–7,500) | 6,000 (5,300–7,700) | 7,200 (6,400–7,800) | 8,400 (7,300–9,200) | 0.008 |
| Monocytes | 0.4 (0.3–0.5) | 0.4 (0.3–0.5) | 0.5 (0.4–0.6) | 0.4 (0.3–0.6) | 0.38 |
| CD4+ lymphocytes | 975 (962–1,078) | 1,060 (708–1,206) | 1,200 (863–1,495) | 1,136 (933–1,326) | 0.36 |
| CD8+ lymphocytes | 643 (340–945) | 443 (368–556) | 507 (440–673) | 452 (335–783) | 0.45 |
| Neutrophils | 3,100 (2,400–4,600) | 3,700 (2,700–4,700) | 3,900 (3,600–4,200) | 5,300 (4,700–6,200) | 0.013 |
a
By the Kruskal-Wallis test and Pearson's chi-square test.
b
Data are medians (interquartile ranges). NA, not applicable.