在某个艾滋病诊所，研究者专门计算过病毒性痴呆的发生率及相关危险因子，在随机抽取的78位艾滋患者中有24位患有病毒性痴呆，比例占31%。

It was aimed at measuring the frequency and associated risk factors of HIV dementia in an HIV clinic where 24 of 78 (31 per cent) randomly sampled patients had HIV dementia.

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在某个艾滋病诊所，研究者专门计算过病毒性痴呆的发生率及相关危险因子，在随机抽取的78位艾滋患者中有24位患有病毒性痴呆，比例占31%。

It was aimed at measuring the frequency and associated risk factors of HIV dementia in an HIV clinic where 24 of 78 (31 per cent) randomly sampled patients had HIV dementia.

youdao