Table 3.

Correlation between male genital tract pathogen detection and routine semen quality indicators (mean ± standard deviation).

Variables	U. urealyticum infection	non-U. urealyticum infection	normal volunteers	F-value	p-value
Age (y)	34.94 ± 7.48	33.87 ± 6.41	33.19 ± 6.36	1.06	0.377
Volume (ml)	2.90 ± 1.17	2.89 ± 0.65	2.35 ± 0.58	1.59	0.175
pH	7.28 ± 0.02	7.15 ± 0.03	7.22 ± 0.03	4.01	0.003
Liquefaction time (min)	31.87 ± 1.41	30.72 ± 1.32	30.81 ± 1.40	7.47	<0.001
Density (× 106/ml)	67.52 ± 33.15	84.22 ± 41.85	73.88 ± 25.09	23.45	<0.001
Forward direction (%)	36.48 ± 12.70	38.97 ± 6.82	43.31 ± 8.78	36.70	<0.001
Non-forward (%)	49.96 ± 9.24	31.38 ± 6.95	39.88 ± 3.69	37.60	<0.001
Inactive (%)	49.96 ± 15.15	31.38 ± 6.39	39.88 ± 11.50	162.69	<0.001
Activity rate (%)	59.19 ± 13.38	68.79 ± 6.69	65.17 ± 10.01	88.77	<0.001
VAP (um/s)	11.14 ± 4.03	12.02 ± 2.85	22.21 ± 25.14	181.80	<0.001
VCL (um/s)	12.67 ± 4.05	14.22 ± 2.63	16.41 ± 4.26	18.95	<0.001
ALH (um/s)	0.66 ± 0.18	0.75 ± 0.06	0.74 ± 0.15	1.24	0.291
BCF (Hz)	12.79 ± 1.02	13.87 ± 1.41	12.87 ± 1.41	12.03	<0.001
MAD (um/s)	99.63 ± 10.61	96.12 ± 7.36	94.22 ± 4.23	200.41	<0.001
VSL (um/s)	7.79 ± 2.79	8.63 ± 2.51	10.57 ± 2.94	22.98	<0.001
sperm motility (%)	40.40 ± 13.07	42.98 ± 5.74	47.21 ± 9.12	39.23	<0.001
WOB (%)	68.45 ± 12.46	71.61 ± 7.55	76.69 ± 9.25	105.19	<0.001
LIN(%)	44.61 ± 9.14	45.68 ± 6.27	51.14 ± 7.03	63.46	<0.001
STR(%)	60.51 ± 6.33	60.93 ± 6.41	63.87 ± 4.13	42.52	<0.001
Viscosity				0.737	0.565

ALH, amplitude of lateral head display; BCF, beat cross frequency; LIN, linear; MAD, mean angular displacement; STR, straightness; VAP, average path velocity; VCL, curve velocity; VSL, straight line velociyt; WOB, wobble.

p<0.05 was considered statistically significant.

Viscosity is a classified variable, and a non-parametric test was used for statistical analysis.