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The Consistency Between Sputum Specimens and Nasopharyngeal Swabs
| Sputum Specimens | ||||
|---|---|---|---|---|
| Nasopharyngeal Swabs | Positive | Negative | Kappa | P |
| ≤14 d | 0.13 (0.13 to 0.38) | .004 | ||
| Positive | 8 (42.1) | 1 (20.0) | ||
| Negativity | 11 (57.9) | 4 (80.0) | ||
| ≤21 d | 0.12 (0.08 to 0.32) | .000 | ||
| Positive | 5 (23.8) | 1 (8.3) | ||
| Negativity | 16 (76.2) | 11 (91.7) | ||
| >21 d | –0.09 (–0.28 to 0.09) | <.001 | ||
| Positive | 3 (10.7) | 3 (25.0) | ||
| Negativity | 25 (89.3) | 9 (75.0) | ||
