| |
|
PCR |
|
| Smear |
Culture |
Positive |
negative |
Not done |
Total |
|
Positive |
Positive |
72 |
3 |
0 |
75 |
| Negative |
2 |
7 |
0 |
9 |
| contaminated |
4 |
- |
0 |
04 |
| Not done |
- |
- |
6 |
06 |
|
Negative |
Positive |
30 |
4 |
0 |
34 |
| Negative |
10 |
75 |
0 |
85 |
| contaminated |
04 |
1 |
- |
05 |
| |
Not done |
- |
- |
18 |
18 |
| Total |
|
122 |
90 |
24 |
236 |
Using the culture as the gold standard diagnostic method, PCR has a sensitivity of (93.6%) and specificity of (87.2% ), whereas smear microscopy has a sensitivity of 68.8% and specificity of 90.4%. TB/HIV co- infection was detected in 3 (2.7%) of tested cases whom were negatively smear and only one was positive by culture and PCR. |
