英语语法分析

Evidence for the safety of hydroxychloroquine was better vs chloroquine.

证据显示羟氯喹的安全性较氯喹高。

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。

Roughly one-third (1808) had taken hydroxychloroquine for some period of time during the study, with duration of treatment averaging 3.1 years.

大约三分之一患者(1808)在研究的某个时期服用了羟基氯喹，平均服药时间3.1年。