Seasonality of sex ratio in Germany |
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| Authors: | Lerchl A |
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| Affiliation: | Institute of Reproductive Medicine of the University, Munster, Germany. |
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| Abstract: | It was investigated whether there is a seasonal variation in sex ratio atbirth in Germany. The analysis was based on records from the German Bureaufor Statistics, covering the period from 1946 to 1995. A highly significant(P < or = 0.001), albeit low-amplitude rhythm was found with two peaksin May and December, and two nadirs in March and October. No correlationswere found between sex ratios and seasonal birth rates during this period. |
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