Table 1.

Sperm motility grading in this study compared to WHO (1999) recommendation

Parameter Density	Values	WHO (1999) criterion
1. Grade A	26.40 ± 1.75 %	50% of forward movements (Grade A & B) or 25% or more Grade A for- ward movement within 60 minutes of ejaculations
2. Grade B	41.99 ± 1.98 %
3. Grade C	18.25 ± 0.65 %
4. Grade D	13.35 ± 0.15 %
Motility	2.99 ± 0.49 um/sec or 68.40 ± 0.53%	More than 8 um/sec or more than50% motile
Viability	86.53 ± 0.11%	More than 75% viable

The grading was done using Weber Sterility chamber under light microscope. Grade A – fast progressive movement; Grade B – slow progressive movement; Grade C – non – progressive movement; Grade D – immotile;

^*motility percentage = Grade A + Grade B;

^**viability percentage = Grade A + Grade B + Grade C.