Double-blind randomized controlled trial of letrozole versus clomiphene citrate in subfertile women with polycystic ovarian syndrome.

Hum Reprod · 2017 · PMC5850470 · PMID 28854590

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an obvious trendno p-value reported

Although we have also found no statistically significant difference in LB rates in non-obese women, our results showed an obvious trend towards markedly higher LB rates with letrozole (53%) compared to CC (37%) (Table II ).

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did not reach statistical significanceno p-value reported

Furthermore, letrozole also resulted in a 40% (RR, 1.4) increase in the LB rate compared to CC (49 versus 35%, respectively), although this did not reach statistical significance as the study was not powered to address this outcome (power 36%, alpha level 0.05).

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