Worldwide trend analysis of primary and secondary infertility rates over past decades: A cross-sectional study.

Int J Reprod Biomed · 2022 · PMC8902794 · PMID 35308328

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an increasing trendno p-value reported

For another example, the LGM result for North Africa and Middle East females indicated that the initial prevalence rate of infertility was 630.3 per 100,000 people and it had an increasing trend with a slope of about 38.5 until 2017.

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a decreasing trendno p-value reported

Over time, the prevalence of primary infertility in men and women had a decreasing trend of -9.3 and -11.6 in high-income countries.

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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.