Trends in high-risk sexual behaviors among general population groups in China: a systematic review.

PLoS One · 2013 · PMC3827370 · PMID 24236121

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a slightly increasing trendno p-value reported

A slightly increasing trend was observed only in the percentage that engaged in premarital sex ( Fig. 3a ).

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an increasing trendno p-value reported

Background The objective of this review was to investigate whether Chinese population groups that do not belong to classical high risk groups show an increasing trend of engaging in high-risk sexual behaviors.

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a clear trendno p-value reported

The available data does not indicate a clear trend of STIs in the general population groups included in our review.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.