Risk Prediction of Ureaplasma urealyticum Affecting Sperm Quality Based on Mathematical Model and Cross-Sectional Study

Table 2

Homogeneity of variance test.

Indicator	Levene statistic
BMI	1.037	1	338	0.309
SV	3.903	1	338	0.049
SC	0.116	1	338	0.734
IM	7.420	1	338	0.007
VCL	10.664	1	338	0.001
VSL	1.985	1	338	0.160
VAP	1.740	1	338	0.188

Note: BMI: body mass index, SV: semen volume; SC: sperm concentration; IM: immotility; VCL: curvilinear velocity; VSL: straight-line (rectilinear) velocity; VAP: average path velocity.