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PPV of staphylococcal synovial fluid culture alone (95% CI)
| All sites | Hip | p value | Knee | p value | |
| All staphylococci | 79% (68 to 87) | 78% (63 to 88) | 1 | 80% (64 to 91) | 1 |
| Staphylococcus aureus | 92% (75 to 99) | 92% (65 to 100) | 1 | 92% (65 to 100) | 1 |
| S. epidermidis | 77% (60 to 88) | 79% (57 to 93) | 1 | 73% (48 to 91) | 1 |
| S. lugdunensis | 100% (69 to 100) | 100% (37 to 100) | 1 | 100% (55 to 100) | 1 |
| Other staphylococci | 46% (21 to 73) | 50% (21 to 79) | 1 | 33% (2 to 87) | 0.62 |
PPV = positive predictive value.
