Table 2.
Comparison of sperm motility parameters between the CT+ and CT− groups
| Parameter | CT+ (n=416) | CT− (n=6738) | P |
|---|---|---|---|
| VAP (µm s−1), mean±s.d. | 54.74±11.47 | 55.16±11.70 | 0.321 |
| VSL (µm s−1), mean±s.d. | 43.88±11.35 | 44.42±11.22 | 0.188 |
| VCL (µm s−1), mean±s.d. | 88.60±18.55 | 88.87±19.77 | 0.984 |
| ALH (µm s−1), mean±s.d. | 4.31±1.02 | 4.29±1.10 | 0.750 |
| BCF (Hz), mean±s.d. | 28.33±4.61 | 28.55±4.98 | 0.240 |
| STR (VSL/VAP), mean±s.d. | 77.29±6.92 | 77.48±6.97 | 0.588 |
| LIN (VSL/VCL), mean±s.d. | 49.71±8.13 | 50.10±8.00 | 0.242 |
VCL: curvilinear velocity; VSL: straight line velocity; VAP: average pathway velocity; ALH: amplitude of lateral head displacement; BCF: beat cross frequency; STR: straightness; LIN, linearity; s.d.: standard deviation; CT+: Chlamydia trachomatis positive; CT−: Chlamydia trachomatis negative