Table 3.
Unadjusted associations between VLC-PUFA (continuous and tertile measures) and sperm parameters
| (Log) Sperm Concentration (millions/mL) GM Ratio (95% CI) |
(Log) Total Motile Count (millions) GM Ratio (95% CI) |
Sperm Motility (%) IRR (95% CI) |
Morphology (%) IRR (95% CI) |
|
|---|---|---|---|---|
| Total VLC-PUFA (%) | 1.61 (1.44, 1.80) | 1.39 (1.22, 1.59) | 1.01 (0.97, 1.05) | 1.17 (1.02, 1.36) |
| Hydroxylated VLC-PUFA (%) | 1.17 (1.03, 1.33) | 1.15 (1.00, 1.33) | 1.00 (0.96, 1.04) | 0.93 (0.77, 1.12) |
| Total VLC-PUFA Tertiles | ||||
| Tertile 1 (< 1.310%) | 1.00 | 1.00 | 1.00 | 1.00 |
| Tertile 2 (1.310% - < 2.440%) | 2.06 (1.57, 2.71) | 2.29 (1.67, 3.15) | 1.02 (0.93, 1.13) | 1.54 (1.10, 2.14) |
| Tertile 3 (≥ 2.440%) | 3.01 (2.29, 3.96) | 2.25 (1.63, 3.10) | 1.00 (0.91, 1.10) | 1.45 (1.04, 2.01) |
| Hydroxylated VLC-PUFA Tertiles | ||||
| Tertile 1 (< 0.139%) | 1.00 | 1.00 | 1.00 | 1.00 |
| Tertile 2 (0.139% - < 0.205%) | 1.43 (1.06, 1.92) | 1.32 (0.95, 1.85) | 1.02 (0.93, 1.13) | 0.73 (0.52, 1.01) |
| Tertile 3 (≥ 0.205%) | 2.18 (1.62, 2.94) | 1.95 (1.39, 2.72) | 1.02 (0.93, 1.13) | 1.05 (0.75, 1.46) |
a
Linear regression model estimating geometric mean (GM) ratio for one-standard deviation change in VLC-PUFA (or tertile comparisons).
b
Negative binomial regression model estimating incidence rate ratio (IRR) for a one-standard deviation change in VLC-PUFA (or tertile comparisons).