Table 3. Pre-freeze and post-thaw semen parameters of mild, moderate, and severe oligozoospermia samples.
Parameter	Mild	Moderate	Severe
	(10 - 15 x 106/ml) n=22	(5 - 10 x 106/ml) n=39	(< 5 x 106/ml) n=92
Pre-freeze
Progressive Motility (%)	55 (41- 65.75)*	47 (33.5- 57.5)*	33 (17- 44)
Vitality (%)	94 (87.25- 95)*	92 (87- 95)*	86 (68.5- 93)
Post-thaw
Progressive Motility (%)	26 (19.25- 31)*	20 (13- 28.5)*	15 (9- 10.17)
Vitality (%)	49 (33.75- 64)*	48 (40 -62)*	32 (17.5 -49.5)
Recovery rate (%)
Progressive Motility	44.4 (37.45- 54.84)*	42.31 (29.35- 64.41)*	22 (10.5- 48.6)
Vitality	53.31 (42.33- 68.29)*	55.91 (47.41- 68.13)*	41.26 (27.27- 64.46)
*p<0.05 vs. severe by Dunn's multiple comparisons test.