FIGURE 2.
Cumulative percentage of non-multidrug-resistant tuberculosis (non-MDR-TB) cases in whom MDR-TB appeared (n=237) during the first year of treatment by a) time after initial diagnosis at which MDR-TB is detected, and b) time after initial diagnosis at which the first follow-up sputum collection occurred. Data are shown separately for new cases (solid line, n=145) and previously treated cases (dotted line, n=92). Straight lines indicate in a) the days after initial diagnosis at which 50% of cases had been diagnosed with MDR-TB (87 days for new cases and 99 days for previously treated cases), and in b) the percentage of cases where sputum had been collected for follow-up testing by 90 days after initial diagnosis (70% of new cases and 46% of previously treated cases). #: The number of days after initial TB diagnosis that MDR-TB diagnosis was made; ¶: the number of days after initial TB diagnosis that first follow-up sputum collection occurred.