Table 2 The degree of agreement between the results of the tourniquet test and those of various laboratory methods
Tourniquet test | ||||
|---|---|---|---|---|
Positive | Negative | κ a(CI 95 %) | Agreement | |
N (%) | N (%) | |||
Final diagnosis | 0.01 (0.00 to 0.02) | Slight | ||
Positive | 1026 (31.5) | 7551 (29.7) | ||
Negative | 2226 (68.5) | 17,832 (70.3) | ||
Total | 3252 (100.0) | 25,383 (100.0) | ||
ELISA(IgM) | 0.05 (0.04 to 0.06) | Slight | ||
Positive | 1016 (69.2 %) | 7539 (53.4 %) | ||
Negative | 453 (30.8 %) | 6590 (46.6 %) | ||
Total | 1469 (100.0) | 14,129(100.0) | ||
PCR | 0.27 (0.06 to 0.49) | Fair | ||
Positive | 20 (62.5 %) | 15 (34.9 %) | ||
Negative | 12(37.5 %) | 28 (65.1 %) | ||
Total | 32 (100.0) | 43 (100.0) | ||