Table 1. Conventional semen parameter values and sperm DNA fragmentation rate across BMI categories.
| Normal (18.5–24.9 kg m−2) (n=151) | Overweight (25.0–29.9 kg m−2) (n=137) | Obese (≥30.0 kg m−2) (n=43) | Linear regression | Normal | Overweight | Obese | |
|---|---|---|---|---|---|---|---|
| Median (Q1–Q3) | Mean difference (95% CI) | ||||||
| Total sperm count (TSC) (106) | 74 (30–173.2) | 73.5 (27.04–111.7) | 32.48 (7.198–134.4) | Univariate | 0 (reference) | −36.7 (−93.6, 20.2) | −10.4 (−88.4, 67.6) |
| Adjusted | 0 (reference) | −43.1 (−103.8, 17.6) | −7.6 (−88.8, 73.6) | ||||
| Motility (%) | 45 (30–50) | 40 (30–50) | 35 (30–50) | Univariate | 0 (reference) | −3.8 (−7.6, 0.1) | −7.2 (−12.7, −1.7) |
| Adjusted | 0 (reference) | −2.7 (−6.9, 1.49) | −8.6 (−14.6, −2.6) | ||||
| Normal morphology (%) | 21 (11.5–29.25) | 16 (8–27) | 18.5 (13.25–31.75) | Univariate | 0 (reference) | −3.3 (−7.0, 5.34) | −0.8 (−1.4, 4.8) |
| Adjusted | 0 (reference) | −1.3 (−6.3, 3.7) | 0.5 (−6.3, 3.7) | ||||
| DNA fragmentation rate (%) | 13 (10–15) | 13 (7.4–19) | 13 (13–21.9) | Univariate | 0 (reference) | 1.1 (−1.4, 3.6) | 3.9 (0.2, 7.6) |
| Adjusted | 0 (reference) | 1.2 (−1.4, 3.8) | 4.2 (0.4, 7.9) | ||||
Abbreviation: BMI, body mass index.