Table 3.
Risk of contracting tuberculosis disease and infection among staff members and inpatients in a psychiatric hospital, Japan, 2012
| TB disease | TB disease + LTBI | Total | |||
|---|---|---|---|---|---|
| n (%, 95% CI) | RR (95% CI) | n (%, 95% CI) | RR (95% CI) | ||
| Inpatients in ward Z | 14 (25.0, 14.4–38.4) | 5.0 (0.7–35.6) | 24 (42.9, 29.7–56.8) | 8.6 (1.2–59.3)a | 56 |
| Former inpatients in ward Z | 0 (0.0, 0.0–41.0) | 0 (–) | 3 (42.9, 9.8–81.6) | 8.6 (1.1–69.5)a | 7 |
| Staff in ward Z | 0 (0, 0.0–11.2) | 0 (–) | 2 (6.5, 0.8–21.4) | 1.3 (0.1–13.3) | 31 |
| Former staff in ward Z | 0 (0, 0.0–28.5) | 0 (–) | 0 (0, 0.0–28.5) | 0 (–) | 11 |
| Non-ward Z staffb | 1 (5.0, 0.0–24.9) | ref. | 1 (5.0, 0.0–24.9) | ref. | 20 |
| Total | 15 (12.0, 6.9–19.0) | – | 30 (24.0, 16.8–32.5) | – | 125 |
CI, confidence interval; ref., reference; RR, relative risk; TB, tuberculosis.
a
Relative risks are statistically significant.
b
Including medical doctors and occupational therapists who had minimal contacts with the index patient (patient A).