Table 1.
Comparison of polymerase chain reaction and culture in all groups (chi-square test)
| Group | Growth | PCR | Culture | P value |
|---|---|---|---|---|
| 1 | + | 12 | 10 | 0.000 |
| − | 13 | 15 | ||
| 2 | + | 12 | 6 | 0.000 |
| − | 13 | 19 | ||
| 3 | + | 7 | 7 | 0.000 |
| − | 18 | 18 |
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