Table 4.
Crude and multivariable-adjusted odds ratios and 95% CIs for sperm parameters rs across tertiles of PDI, hPDI, and uPDI scores
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| Variable | PDI | hPDI | uPDI | |||||||||
| T1 (n=96) | T2 (n=76) | T3 (n=82) | P value | T1 (n=85) | T2 (n=89) | T3 (n=80) | P value | T1 (n=90) | T2 (n=83) | T3 (n=81) | P-value | |
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| Volume (ml) | ||||||||||||
| Model Ia | 1.00 | 1.11 (0.59, 2.08) d | 0.53(0.27, 1.05) | 0.08 | 1.00 | 1.48 (0.78, 2.79) | 0.80(0.40, 1.59) | 0.56 | 1.00 | 0.85(0.44, 1.63) | 0.99(0.52, 1.89) | 0.97 |
| Model IIb | 1.00 | 1.05 (0.55, 1.99) | 0.49 (0.25, 0.98) | 0.05 | 1.00 | 1.48 (0.78, 2.80) | 0.86 (0.42, 1.74) | 0.75 | 1.00 | 0.84 (0.44, 1.62) | 0.98(0.51, 1.88) | 0.95 |
| Model IIIc | 1.00 | 0.92 (0.47, 1.78) | 0.43 (0.21, 0.87) | 0.02* | 1.00 | 1.47 (0.77, 2.81) | 0.84 (0.40, 1.75) | 0.72 | 1.00 | 0.85 (0.43, 1.68) | 0.99 (0.50, 1.96) | 0.90 |
| Density (×106/ml) | ||||||||||||
| Model Ia | 1.00 | 0.60 (0.31, 1.18) | 0.97 (0.49, 1.94) | 0.89 | 1.00 | 0.46 (0.23, 0.93) | 0.70 (0.33, 1.45) | 0.34 | 1.00 | 0.89 90.45, 1.75) | 0.86 (0.44, 1.70) | 0.67 |
| Model IIb | 1.00 | 0.59 (0.30, 1.17) | 0.98 (0.49, 1.97) | 0.91 | 1.00 | 0.45 (0.22, 0.91) | 0.66 (0.31, 1.40) | 0.26 | 1.00 | 0.88 (0.44, 1.73) | 0.86 (0.43, 1.70) | 0.66 |
| Model IIIc | 1.00 | 0.52 (0.26, 1.07) | 1.02 (0.50, 2.11) | 0.97 | 1.00 | 0.44 (0.21, 0.89) | 0.71 (0.33, 1.56) | 0.36 | 1.00 | 0.97 (0.48, 1.96) | 0.92(0.45, 1.89) | 0.84 |
| Total motility (%) | ||||||||||||
| Model Ia | 1.00 | 0.72 (0.37, 1.41) | 1.18 (0.59, 2.38) | 0.68 | 1.00 | 0.69 (0.35, 1.38) | 0.80 (0.39, 1.65) | 0.55 | 1.00 | 0.45 (0.21, 0.95) | 0.34 (0.16, 0.72) | 0.005* |
| Model IIb | 1.00 | 0.69 (0.35, 1.37) | 1.13 (0.56, 2.30) | 0.77 | 1.00 | 0.69 (0.35, 1.39) | 0.87 (0.42, 1.81) | 0.70 | 1.00 | 0.45 (0.21, 0.95) | 0.34(0.16, 0.72) | 0.005* |
| Model IIIc | 1.00 | 0.66 (0.32, 1.33) | 1.17 (0.56, 2.42) | 0.75 | 1.00 | 0.68 (0.34, 1.38) | 0.88 (0.41, 1.88) | 0.66 | 1.00 | 0.49(0.23, 1.06) | 0.39 (0.18, 0.85) | 0.01* |
| Normal morphology (%) | ||||||||||||
| Model Ia | 1.00 | 0.65 (0.21, 2.04) | 0.84 (0.26, 2.72) | 0.76 | 1.00 | 1.05 (0.29, 3.76) | 0.49 (0.15, 1.54) | 0.20 | 1.00 | 1.52 (0.47, 4.85) | 1.22 (0.40, 3.67) | 0.70 |
| Model IIb | 1.00 | 0.73 (0.23, 2.30) | 0.93(0.28, 3.06) | 0.90 | 1.00 | 1.10 (0.30, 4.01) | 0.43 (0.13, 1.39) | 0.14 | 1.00 | 1.64 (0.50, 5.31) | 1.28 (0.42, 3.91) | 0.63 |
| Model IIIc | 1.00 | 0.71 (0.21, 2.30) | 0.86 (0.25, 2.96) | 0.82 | 1.00 | 1.01 (0.27, 3.78) | 0.35 (0.10, 1.21) | 0.09 | 1.00 | 2.08 (0.61, 7.09) | 1.72 (0.51, 5.73) | 0.42 |
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a; Crude, b; Adjusted for age and energy intake, c; Additionally adjusted for BMI, physical activity, marriage time, educational status, smoking and alcohol history, d; These values are odd ratio (95% CIs), e ; Obtained from logistic regression, T1; First tertile, T2; Second tertile, T3; Third tertile, BMI; Body mass index, CI; Confidence interval, and * ; P˂0.05 was considered as significant (more explanation are reported in result section).