Table 4 Value of selected clinical features in predicting a laboratory-positive diagnosis of dengue in suspected dengue patients during the 2007 outbreak in southern Taiwan
From: Clinical and laboratory predictive markers for acute dengue infection
Laboratory feature | Dengue (+) | Dengue (−) | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) |
|---|---|---|---|---|---|---|
(1) Fever | 253/376 | 99/114 | 67.3 | 12.3 | 71.7 | 10.2 |
(2) Rash | 222/376 | 28/114 | 59.2 | 75.4 | 88.8 | 35.8 |
(3) Petechiae | 184/376 | 85/114 | 37 | 25.4 | 62.1 | 10.9 |
(4) Myalgia | 268/376 | 53/114 | 46.8 | 53.5 | 76.9 | 23.4 |
(5) Nausea/vomiting | 126/376 | 38/114 | 33.5 | 66.7 | 76.8 | 23.3 |
(6) Positive tourniquet test* | 178/263 | 0/68 | 34.2 | 100 | 100 | 28.2 |