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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The prevalence rate of smear-positive tuberculosis was 145 per 100 000 (95% confidence interval: 110–180) assuming no tuberculosis in persons aged< 15 years.

如果假设不满15岁的人群中无人罹患结核病，那么痰涂片呈阳性的结核病的患病率为每10万人中有145人（95%的置信区间：110-180）。

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This avoids the difficult problems to rank the interval Numbers, and views the decision scheme in a whole system to seek a positive and negative ideal scheme, thus being intelligible and operational.

本文将整个评价方案看作一个整体来寻求正、负理想方案，该方法避免了区间数难以排序的问题，具有可理解性和可操作性。

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Aberdeen began the second period in a positive fashion and denied Falkirk the possession they enjoyed before the interval.

BBC: Aberdeen's Diamond flashes a header wide of the target

Ferguson made another switch during the interval, sending on Carlos Tevez for the ineffective Anderson, a positive move that reflected United's failure to build on their early domination.

BBC: Barcelona 2-0 Man Utd

Dr. CASTRO: Then if it's positive, you add another couple of weeks for drug resistance testing, so you can see already a month interval easily going by before you have any result where you can hang your hat on.

NPR: TB Traveler Exposes Diagnosis Problems