Table 4.

Association between scrotal ultrasound and the semen parameters in sub-groups with or without varicocele

Scrotal ultrasound	Non-varicocele			Varicocele
	Normal (n = 101)	Abnormal (n = 229)	p	Normal (n = 53)	Abnormal (n = 175)	p
Right Volume, ml	9.21 ± 2.21	8.63 ± 2.21	0.029	9.67 ± 1.88	8.75 ± 2.34	0.0096
PSV, m/s	5.15 ± 0.85	5.20 ± 0.94	0.551	5.41 ± 0.90	5.29 ± 0.84	0.534
EDV, m/s	2.16 ± 0.32	2.17 ± 0.36	0.211	2.29 ± 0.36	2.19 ± 0.33	0.151
RI	0.65 ± 0.54	0.60 ± 0.02	0.831	0.60 ± 0.01	0.60 ± 0.01	0.923
Left Volume, ml	9.06 ± 2.04	8.65 ± 2.29	0.139	9.54 ± 1.78	8.51 ± 2.44	0.0047
PSV, m/s	5.23 ± 0.76	5.30 ± 0.83	0.709	5.49 ± 0.85	5.37 ± 0.84	0.353
EDV, m/s	2.19 ± 0.40	2.21 ± 0.32	0.475	2.29 ± 0.33	2.22 ± 0.33	0.144
RI	0.59 ± 0.01	0.59 ± 0.02	0.553	0.59 ± 0.01	0.59 ± 0.01	0.329
TTV, ml	18.27 ± 4.18	17.28 ± 4.28	0.072	19.21 ± 3.60	17.26 ± 4.59	0.005

TTV = Total testicular volume.

Only 3 parameters (right volume, left volume and TTV) were normal distribution. Otherwise, Mann-Whitney test was used to compare the association.