Table 2. Timing of TB recurrence and death for 111 multi-drug resistant tuberculosis patients evaluated four years after being successfully treated for TB in 2004.
Timing of TB recurrence or death, in months after end of treatment | New cases (n = 52) | Retreatment cases (n = 59) | ||||||||||||||
TB recurrence | Death | TB recurrence | Death | |||||||||||||
n | cum. n (cum. %) | SS/C+ | cum. n ( cum. %) | n | cum. n (cum. %) | n due to TB | cum. n (cum. %) | n | cum. n (cum. %) | SS/C+ | cum. n (cum. %) | n | cum. n (cum. %) | n due to TB | cum. n (cum. %) | |
≤12 | 5 | 5 (9.6) | 3 | 3 (5.8) | 2 | 2 (3.8) | 0 | 0 (0.0) | 12 | 12 (20.3) | 2 | 2 (3.4) | 9 | 9 (15.3) | 7 | 7 (11.9) |
13–24 | 6 | 11 (21.2) | 1 | (4 (7.7) | 5 | 7 (13.5) | 2 | 2 (3.8) | 10 | 22 (37.3) | 4 | 6 (6.8) | 8 | 17 (28.8) | 6 | 13 (22.0) |
25–36 | 7 | 18 (34.6) | 1 | 5 (9.6) | 3 | 10 (19.2) | 3 | 5 (9.6) | 10 | 32 (54.2) | 2 | 8 (13.6) | 7 | 24 (40.7) | 6 | 19 (32.2) |
37+ | 6 | 24 (46.2) | 5 | 10 (19.2) | 3 | 13 (25.0) | 1 | 6 (11.5) | 7 | 39 (66.1) | 5 | 13 (22.0) | 3 | 27 (45.8) | 2 | 21 (35.6) |
cum. = cumulative.
SS/C+ = Sputum smear or culture was positive at time of follow-up.
Comparison of recurrence rate between new cases and retreatment cases: Pearson X2 = 4.481, P = 0.03.
Comparison of SS/C+ TB recurrence rate between new cases and retreatment cases: Pearson X2 = 0.132, P = 0.72.
Comparison of death rate between new cases and retreatment cases: Pearson X2 = 5.169, P = 0.02.
Comparison of death due to TB between new cases and retreatment cases: Pearson X2 = 8.318, P = 0.003.