Table 2.
Characteristics of the cases with tuberculosis (TB) and latent TB infection (LTBI) in a psychiatric hospital, Japan, 2012
| TB disease | LTBI | %TB disease (95% CI) | Total | |
|---|---|---|---|---|
| Number | 15 | 15 | 50.0 (31.2–68.7) | 30 |
| Sex | ||||
| Male | 6 | 7 | 46.2 (19.2–74.9) | 13 |
| Female | 9 | 8 | 52.9 (27.8–77.0) | 17 |
| Age | ||||
| 0–34 | 1 | 0 | 100 (2.5–100)a | 1 |
| 35–44 | 0 | 2 | 0 (0–84.2)a | 2 |
| 45–54 | 0 | 4 | 0 (0–60.2)a | 4 |
| 55–64 | 4 | 5 | 44.4 (13.7–78.8)a | 9 |
| 65–74 | 4 | 3 | 57.1 (18.4–90.1)a | 7 |
| 75+ | 6 | 1 | 85.7 (42.1–99.6)a | 7 |
| Site of TB | ||||
| Pulmonary | 12 | – | – | – |
| Pleural | 3 | – | – | – |
| Bacteriological confirmation | ||||
| Smear- and culture-positive | 6 | – | – | – |
| Smear-negative and culture-positive | 2 | – | – | – |
| Smear-negative and culture-negative | 7 | – | – | – |
LTBI, latent tuberculosis infection; TB, tuberculosis.
aThe proportion of TB disease among TB disease and LTBI statistically significantly (P < 0.03) increased as the age of the group increased.