Principal components analysis on all sperm quality parameters to produce principal components that account for sperm quality.

VAP = average path velocity, VSL = straight line velocity, VCL = velocity along the sperm cells point-to-point track, ALH = lateral amplitude of sperm head movement, BCF = frequency with which the sperm head crosses the average sperm path, STR = straightness of the sperm's path, LIN = linearity of the sperm's path, % motile = percentage of motile sperm in the ejaculate, concentration = concentration of sperm in the ejaculate (million sperm/ml).Principal components analysis on all sperm quality parameters to produce principal components that account for sperm quality.