| Table 1. Key correlations between sperm parameters and DFI (|r| ≥ 0.3)*. | ||
| Sperm parameters | Mean±SD | Spearman’s correlation |
|---|---|---|
| Progressive (%) | 57.96±23.08 | -0.43 |
| Motile (%) | 21.89±14.27 | -0.42 |
| Immotility (%) | 28.31±23.37 | 0.41 |
| Total Motility (%) | 71.69±23.37 | -0.41 |
| Vitality (%) | 79.59±19.55 | -0.40 |
| VCL (μm/s) | 25.23±7.01 | -0.40 |
| ALH (μm) | 1.84±0.57 | -0.38 |
| ALH[0-2μm] (%) | 65.58±18.68 | 0.37 |
| VAP (μm/s) | 16.91±4.82 | -0.37 |
| Tail Length (μm) | 14.24±4.32 | -0.34 |
| VAP[0-5μm/s] (%) | 26.19±14.95 | 0.34 |
| VAP[35-45μm/s] (%) | 7.12±7.77 | -0.34 |
| ALH[2-4μm] (%) | 27.41±14.11 | -0.34 |
| ALH[4-6μm] (%) | 6.72±8.72 | -0.31 |
| VSL (μm/s) | 13.67±4.48 | -0.30 |
(*) Only variables with an absolute correlation coefficient |r| ≥ 0.3 are shown.
The full correlation analysis includes 32 variables. VCL: curvilinear velocity;
VSL: straight line velocity; VAP: average path velocity; ALH: amplitude of lateral head displacement.