From: High incidence and low case detection rate among contacts of tuberculosis cases in Shanghai, China
Follow-up time (year) | No. of contacts | Observed pys | TB cases | Cumulative incidence /100,000 | 95% CI | Incidence density /100,000 pys | 95% CI |
---|---|---|---|---|---|---|---|
0–1 | 8137 | 7538 | 35 | 430 | 300–598 | 464 | 323–646 |
1–2 | 6599 | 5844 | 13 | 197 | 105–337 | 222 | 118–380 |
2–3 | 4945 | 4213 | 14 | 283 | 155–475 | 332 | 182–558 |
3–4 | 3328 | 2514 | 3 | 90 | 19–263 | 119 | 25–349 |
4–5 | 1638 | 866 | 4 | 244 | 67–624 | 462 | 126–118 |
5–5.25 | 146 | 16 | 0 | 0 | – | 0 | – |
Total | 8137 | 20,991 | 69 | 848 | 660–1071 | 329 | 256–416 |