Table 3.
Univariate and multivariate logistic regression analyses of factors associated with positive results for severe fever with thrombocytopenia syndrome using RT-PCR.
| Variable | Univariate | Multivariate | ||||
|---|---|---|---|---|---|---|
| OR | CI (95%) | p-Value | OR | CI (95%) | p-Value | |
| Fever ≥ 38.0 °C | 4.15 | 1.64–10.35 | <0.001 | |||
| Dizziness | 3.42 | 1.03–5.69 | <0.001 | |||
| Poor oral intake | 5.81 | 3.60–7.66 | <0.001 | 5.87 | 2.42–8.25 | 0.002 |
| Diarrhea | 4.32 | 2.36–10.19 | 0.319 | |||
| Lymphadenopathy | 6.36 | 5.74–10.21 | <0.001 | 7.20 | 6.24–11.76 | <0.001 |
| Ambient temperature ≥ 20 °C | 4.18 | 2.19–8.57 | <0.001 | 4.62 | 1.46–10.28 | 0.016 |
| Humidity ≥ 74% | 4.17 | 2.72–10.51 | <0.001 | |||
| Rainfall amount ≥ 10 mmL | 2.34 | 1.19–4.16 | <0.001 | |||
| WBC ≤ 4000 cells/μL | 14.96 | 6.00–37.33 | <0.001 | |||
| ANC ≤ 2000 cells/μL | 15.70 | 6.78–36.36 | <0.001 | 8.95 | 2.30–21.25 | 0.005 |
| Lymphocytes fraction ≥ 28% | 2.93 | 1.53–5.59 | 0.01 | |||
| Platelet ≤ 90,000 cells/μL | 2.80 | 1.51–5.21 | 0.001 | |||
| CRP ≤ 1.2 mg/dL | 7.81 | 5.61–21.63 | <0.001 | 6.42 | 4.02–24.21 | <0.001 |
| CK ≥ 200 IU/L | 2.63 | 1.32–5.23 | 0.006 | 5.94 | 1.42–24.92 | 0.015 |
| aPTT ≥ 35 sec | 4.74 | 2.32–9.68 | <0.001 | |||
| Creatinine ≤ 1.8 mg/dL | 2.75 | 1.00–7.57 | 0.05 |
Abbreviation: WBC = white blood cell, ANC = absolute neutrophil count, CRP = C-reactive protein, CK = creatinine kinase, aPTT = activated partial thromboplastin time.