| Positive PCR | Negative PCR | Total |
Positive microscopy | 172 (62.8%) | 8 (2.9%) | 180 (65.7%) |
Negative microscopy | 42 (15.3%) | 52 (19%) | 94 (34.3%) |
Total | 214 (78.1%) | 60 (21.9%) | 274 (100%) |