Table 4 Comparison of ZN and CS methods for detection and grading of AFB in first-spot sputum specimens
ZN; no. (%)/24 | |||||||
|---|---|---|---|---|---|---|---|
Grade | 3+ | 2+ | 1+ | Scanty | Negative | Total | |
3+ | 5(1.4) | 0(0) | 0(0) | 0(0) | 0(0) | 5(1.4) | |
2+ | 3(0.8) | 8(2.2) | 0(0) | 0(0) | 0(0) | 11(3.0) | |
CS/23 | 1+ | 0(0) | 0(0) | 6(1.7) | 0(0) | 0(0) | 6(1.7) |
Scanty | 0(0) | 0(0) | 0(0) | 1(0.3) | 0(0) | 1(0.3) | |
Negative | 0(0) | 0(0) | 0(0) | 1(0.3) | 338(93.4) | 339(93.6 | |
Total | 8(2.2) | 8(2.2) | 6(1.7) | 2(0.6) | 338(93.4) | 362(100) | |