The semiquantitative slide agglutination and single-tube Widal tests had positive predictive values (PPVs) of 25.0% (95% confidence interval, CI: 0.6–80.6) and 20.0% (95% CI: 2.5–55.6), respectively.
半定量玻片凝集试验和单管维达尔试验的阳性预测值（PPVs）分别为25.0%（95%可信区间：0.6-80.6）和20.0%（95%可信区间：2.5-55.6）。
The semiquantitative slide agglutination and single-tube Widal tests had positive predictive values (PPVs) of 25.0% (95% confidence interval, CI: 0.6–80.6) and 20.0% (95% CI: 2.5–55.6), respectively.
半定量玻片凝集试验和单管维达尔试验的阳性预测值（PPVs）分别为25.0%（95%可信区间：0.6-80.6）和20.0%（95%可信区间：2.5-55.6）。
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