Characteristic | Semen volume | Total motility | Progressive motility | Sperm concentration | Sperm count | pH value | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(< 1.5 ml vs ≥ 1.5 ml) | (< 40% vs ≥ 40%) | (< 32% vs ≥ 32%) | (< 15 × 106/ml vs ≥ 15 × 106/ml) | (< 39 × 106 vs ≥ 39 × 106) | (< 7.2vs ≥ 7.2) | |||||||||||||
OR(95%CI) | P | R2 | OR(95%CI) | P | R2 | OR(95%CI) | P | R2 | OR(95%CI) | P | R2 | OR(95%CI) | P | R2 | OR(95%CI) | P | R2 | |
Smoking | 9.06 (0.64–128.28) | 0.103 | 0.326 | 0.85 (0.28–2.60) | 0.771 | 0.208 | 0.87 (0.39–1.95) | 0.735 | 0.049 | 14.44 (0.13–1619.17) | 0.267 | 0.561 | 4.04 (0.29–56.36) | 0.300 | 0.313 | 0.69 (0.21–2.32) | 0.55 | 0.128 |
Drinking | 4.27 (0.45–40.73) | 0.207 | 0.45 (0.17–1.20) | 0.111 | 0.92 (0.41–2.05) | 0.830 | 3.46 (0.08–155.40) | 0.522 | 1.45 (0.22–9.49) | 0.701 | 0.98 (0.30–3.21) | 0.968 | ||||||
Types of regular drinking | 1.36 (0.77–2.41) | 0.294 | 0.80 (0.59–1.08) | 0.146 | 0.97 (0.77–1.22) | 0.792 | 1.23 (0.43–3.47) | 0.698 | 0.93 (0.52–1.65) | 0.793 | 1.00 (0.71–1.41) | 0.993 | ||||||
Won’t use plastic beverage bottles as containers | 0.12 (0.03–0.55) | 0.006* | 0.53 (0.27–1.05) | 0.067 | 0.89 (0.51–1.56) | 0.685 | 0.00 (0.00–0.30) | 0.012* | 0.12 (0.03–0.48) | 0.003* | 0.86 (0.37–1.99) | 0.721 | ||||||
Dietary preference | 1.43 (0.69–2.97) | 0.34 | 1.36 (0.89–2.09) | 0.155 | 1.02 (0.77–1.37) | 0.874 | 0.72 (0.22–2.35) | 0.587 | 1.32 (0.58–2.98) | 0.51 | 0.95 (0.61–1.47) | 0.819 | ||||||
Have the habit of eating fried food | 0.04 (0.00–1.30) | 0.071 | 1.73 (0.35–8.46) | 0.5 | 1.16 (0.34–3.94) | 0.818 | 12.42 (0.00–2434424.12) | 0.685 | 0.98 (0.02–58.68) | 0.994 | 1.55 (0.28–8.77) | 0.618 | ||||||
Consumption of milk and dairy products | 0.11 (0.02–0.83) | 0.032* | 0.60 (0.24–1.50) | 0.274 | 1.08 (0.54–2.17) | 0.819 | 0.24 (0.02–3.86) | 0.315 | 0.32 (0.05–2.00) | 0.221 | 2.50 (0.93–6.70) | 0.069 | ||||||
Frequency of eating eggs | 9.41 (1.55–57.27) | 0.015* | 1.32 (0.43–3.99) | 0.626 | 1.11 (0.52–2.37) | 0.789 | 12.37 (0.49–311.32) | 0.126 | 6.70 (0.92–49.07) | 0.061 | 1.92 (0.68–5.44) | 0.219 | ||||||
Frequency of eating dark colour vegetables such as yellow, red and purple | 2.10 (0.45–9.76) | 0.342 | 1.35 (0.59–3.07) | 0.477 | 0.93 (0.48–1.79) | 0.822 | 1.88 (0.06–61.60) | 0.723 | 2.91 (0.53–15.93) | 0.219 | 1.72 (0.66–4.50) | 0.272 | ||||||
The average number of hours spent on phones on bed before going to sleep each day | 1.03 (0.39–2.74) | 0.947 | 0.99 (0.62–1.58) | 0.965 | 1.39 (0.95–2.02) | 0.088 | 1.27 (0.24–6.75) | 0.78 | 1.22 (0.47–3.18) | 0.681 | 1.15 (0.67–1.97) | 0.606 | ||||||
Difficulty falling asleep | 1.83 (0.56–5.99) | 0.318 | 0.74 (0.41–1.35) | 0.329 | 0.83 (0.52–1.31) | 0.417 | 0.22 (0.04–1.29) | 0.093 | 0.36 (0.11–1.13) | 0.079 | 0.56 (0.29–1.08) | 0.082 | ||||||
Getting enough sleep | 1.48 (0.44–5.06) | 0.529 | 0.47 (0.24–0.95) | 0.034* | 0.66 (0.39–1.11) | 0.116 | 1.26 (0.11–14.29) | 0.855 | 1.25 (0.31–5.06) | 0.753 | 0.76 (0.35–1.63) | 0.477 | ||||||
The length of a daily nap | 2.93 (0.89–9.62) | 0.077 | 1.19 (0.66–2.14) | 0.572 | 0.94 (0.59–1.48) | 0.774 | 14.95 (0.89–250.03) | 0.06 | 2.11 (0.55–8.15) | 0.279 | 1.17 (0.59–2.32) | 0.664 |