observation period

基本解释

Of the 4905 patients included in this analysis, 1808 (37%) reported hydroxychloroquine use at some time during the observation period.
该研究分析的4905名患者，其中有1808名（37%）报告曾在观测期内某段时间使用过羟基氯喹。
Among the 109 whose tumors did not grow over the observation period, which for some patients was up to 15 years, no melanoma-related deaths occurred.
观察期内，那些没有出现肿瘤生长的共109名患者里，有些人长达15年内都没有出现黑色素瘤导致的死亡。
The other 49 people seated nearby on the same plane have been isolated for a 10-day doctor observation period, said Yoichi Masuzoe, Japan's health minister.
日本厚生劳动大臣舛添要一(Yoichi Masuzoe)说，机上另外49位坐在他们附近的乘客已经开始为期10天的医学观察期。

The equipment measured twenty slow earthquakes during the five-year observation period.

If you slide your observation period forward or back, those bad returns often disappear fast.
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During the observation period, 1, 156 patients (28.4 percent) died, with 879 (76.0 percent) of these deaths related to cardiovascular disease.
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But right after his observation period was up, before Weaver could retrieve the model, another car moved to the right to hit the animal as he stood less than 20 feet away.
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