Clinical and Structural Features of Sperm Head Vacuoles in Men Included in the In Vitro Fertilization Programme

Table 2

Correlation between sperm head vacuoles (proportions of Classes I–IV) sperm with classical parameters of sperm quality (concentration, motility, and morphology).

Correlations
	Sperm quality
	Concentration	Motility	Morphology
Spearman's rho
I plus II
Correlation; coefficient	,233*	,201	,326**
Significance (2-tailed)	,037	,074	,004
𝑁	80	80	78
III plus IV
Correlation; coefficient	−,238*	−,208	−,328**
Significance (2-tailed)	,033	,063	,003
𝑁	80	80	78
I
Correlation; coefficient	,321**	,222*	,529**
Significance (2-tailed)	,004	,048	,000
𝑁	80	80	78
II
Correlation; coefficient	,055	,111	−,091
Significance (2-tailed)	,627	,326	,429
𝑁	80	80	78
III
Correlation; coefficient	−,188	−,138	−,275*
Significance (2-tailed)	,095	,222	,015
𝑁	80	80	78
IV
Correlation; coefficient	−,217	−,225*	−,267*
Significance (2-tailed)	,054	,044	,018
𝑁	80	80	78

∗Correlation is significant at the 0.05 level (2-tailed).
**Correlation is significant at the 0.01 level (2-tailed).