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Table 5 Binomial regression model to explore the relationship between lifestyle and dietary intake and semen quality

From: Association of diet and lifestyle factors with semen quality in male partners of Chinese couples preparing for pregnancy

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

  1. *P < 0.05
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Reproductive Health

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