Fig. 1
From: Decline of semen quality over the last 30 years in Uruguay
Graphic representation of the relationship between semen parameter values and time. Parameters included are: a volume (milliliter) n = 317 b sperm concentration, (millions of spermatozoa per milliliter of semen), n = 317 c vitality (percentage of viable sperm over the total) n = 209, d percentage of fast progressive motility (motility type a), n = 317 e percentage of slow progressive motility (motility type b), n = 317 f percentage of total progressive motility (motility types a + b), n = 317 g percentage of normal sperm morphology from 1988 to 1999 n = 65 h percentage of normal sperm morphology from 2000 to 2019 n = 252 i total number of spermatozoa per ejaculate (expressed in millions of cells), n = 317