TABLE 1.
Patient characteristics and strain characteristics for isolates with one or more LIBs in the IS6110 RFLP pattern of M. tuberculosis and for isolates with normal-intensity bands in the RFLP pattern
| Characteristic | Isolates with LIBs in RFLP patterns
|
Isolates without LIBs in RFLP patterns
|
||
|---|---|---|---|---|
| n | No. positivea | n | No. positivea | |
| Age (yr) | 77 | 1,087 | ||
| <25 | 9 (11.7) | 205 (18.9) | ||
| 25–44 | 33 (42.9) | 523 (48.1) | ||
| 45–64 | 17 (22.1) | 163 (15.0) | ||
| ≥65 | 18 (23.4) | 196 (18.0)b | ||
| Median (P5; P95)c | 39 (19;80) | 35 (17;81) | ||
| Male | 72 | 46 (63.9) | 1,029 | 617 (60.0) |
| Extrapulmonary isolate | 72 | 9 (12.5) | 911 | 120 (13.2) |
| Clustered | 83 | 46 (55.4) | 1,119 | 573 (51.2) |
| Drug-resistant isolate | 82 | 17 (20.7) | 1,116 | 156 (14.0) |
| Median no. of IS6110 bands (P5;P95) | 82 | 11 (1;17) | 1,113 | 10 (1;17) |
a
Values are number (percentage) unless otherwise indicated.
b
χ2trend = 4.7; P < 0.05.
c
(P5;P95), 5th percentile; 95th percentile.