Table 2. Rates of sputum culture conversion in patients receiving individualized MDR-TB regimens, by treatment semester.

Time since start of MDR-TB regimen	Conversions	Total person-time (months)	Rate per 100 person months [95% CI]
0–6 months	480	1514.6	31.7 [29.0, 34.6]
7–12 months	26	258.0	10.1 [6.7, 14.5]
>12 months	13	265.9	4.9 [2.7, 8.1]