Seasonal variations and age-related changes in human sperm count, motility, motion parameters, morphology, and white blood cell concentration Grace M.

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Presentation transcript:

Seasonal variations and age-related changes in human sperm count, motility, motion parameters, morphology, and white blood cell concentration Grace M Centola, Ph.D., Shirley Eberly, M.S. Fertility and Sterility Volume 72, Issue 5, Pages 803-808 (November 1999) DOI: 10.1016/S0015-0282(99)00395-7

Figure 1 Boxplots of donors’ and infertile patients’ sperm counts by season. The center horizontal line in each box represents the median, with the top and bottom edges of the box representing the 75th and 25th percentiles. The vertical bars extend from the box to the range of the data, to a distance of a maximum of 1.5 interquartile ranges. The interquartile range is the distance between the 25th and 75th sample percentiles. Centola. Variations in sperm. Fertil Steril 1999. Fertility and Sterility 1999 72, 803-808DOI: (10.1016/S0015-0282(99)00395-7)