Table 3.

Evaluation of the ability of pre and post-processing semen analysis parameters to predict pregnancy by stepwise discriminant analysis

Parameter	F to enter
Initial volume (ml)	0.16
Initial concentration (M/ml)a	2.75
Initial percent motile (%)	0.74
Initial concentration motile (M/ml)a	0.31
Initial total motile sperm count (M)a	1.22
Initial progression (U/seconds)	1.91
Initial path speed (U/seconds)	1.22
Initial linearity (0-100)	0.67
Initial lateral head displacement (U)	0.45
Initial velocity average path (U/seconds)	1.39
Post volume (ml)	0.17
Post concentration (M/ml)a	3.11
Post percent motile (%)	0.001
Post concentration motile (M/ml)a	2.34
Post total motile sperm count (M)a	3.35
Post progression (U/seconds)	0.56
Post path speed (U/seconds)	0.50
Post linearity (0-100)	1.86
Post lateral head displacement (U)	0.57
Post velocity average path (U/seconds)	0.001

For the Stepwise discriminant analysis, the minimum F to enter the computation was 3.84 which is the minimum value to result in a statistically significant result. As can be noted above, none of the variables reached the minimum F which could result in a statistically significant comparison. In other words, none of the sperm parameters predicted a pregnancy using discriminant analysis. M; Million and a; <0.05 statistically significant.