Table 6.
Incidence rate of tuberculosis among contacts treated by preventive treatment for LTBI in congregate settings.
| PT completed | PT Started, did not complete | Did not start PT | |||||||
|---|---|---|---|---|---|---|---|---|---|
| TB casesa | Person-Years of Observation, No. | Incidence Rate/100,000b (95% CI) | TB casesa | Person-Years of Observation, No. | Incidence Rate/ 100,000b (95% CI) | TB casesa | Person-Years of Observation, No. | Incidence Rate/ 100,000b (95% CI) | |
| Total | 15 | 12,577 | 119 (58.9–179.6) | 22 | 3,594 | 612 (356.4–867.9) | 81 | 17,594 | 460 (360.1–560.6) |
| Age, years | |||||||||
| 0–35 | 8 | 8,187 | 98 (30.0–165.4) | 14 | 1,827 | 766 (364.9–1,168.0) | 37 | 4,395 | 842 (570.6–1,113.0) |
| ≥36 | 7 | 4,390 | 159 (41.3–277.6) | 8 | 1,767 | 453 (139.1–766.5) | 44 | 13,199 | 333 (234.9–431.9) |
PT, preventive therapy; LTBI, latent tuberculosis infection; TB, tuberculosis; CI, confidence interval.
aIncident TB = TB diagnosed within 90 days after diagnosis of the index patient.
bIncidence rate in cases per 100,000 person-years observation.