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Comparison of TB incidence rates among patients ever on IPT against those never on IPT (N = 62,983)
| IPT status | Number of TB cases | Total person-years (TPYrs) | Incidence rate (per 100pyrs) | IRR (95% CI) |
|---|---|---|---|---|
| Never on IPT | 2845 | 96,845 | 2.94 | 1.0 |
| Ever on IPT | 279 | 18,081 | 1.54 | 0.52 (0.46–0.59) |
| Total | 3124 | 114,926 | 2.7 |
