Table 1 Comparison of quantization of AFB from direct and concentrated smear microscopy
From: Comparison of direct versus concentrated smear microscopy in detection of pulmonary tuberculosis
Direct smear results | No. of specimens with the following concentrated smear results: | Total | ||||
|---|---|---|---|---|---|---|
Negative n (%) | Scanty n (%) | 1 + n (%) | 2 + n (%) | 3 + n (%) |  | |
Negative | 827 (98.3) | 11 (1.3) | 3 (0.4) | Â | Â | 841 |
Scanty | 1 (11.1) | 2 (22.2) | 6 (66.7) | Â | Â | 9 |
1+ | Â | Â | 8 (42.1) | 10 (52.6) | 1 (5.3) | 19 |
2+ | Â | Â | 1 (3.7) | 16 (59.3) | 10 (37.0) | 27 |
3+ | Â | Â | Â | Â | 19 (100) | 19 |
Total | 828 | 13 | 18 | 26 | 30 | 915 |