Table 1 Comparison of semen parameters between the exposure and control groups.

From: COVID-19 infection was associated with poor sperm quality: a cross-sectional and longitudinal clinical observation study

Semen parameters

Exposure group

Control group

t/Z

P

N

\(\bar{X}\) ± S/M(IRQ)

N

\(\bar{X}\) ± S/M(IRQ)

Semen volume (ml)

515

3.20(1.90)

89

3.20(1.95)

-0.387

0.699

Sperm concentration (×106/ml)

515

49.28(58.93)

89

57.67(54.34)

-1.940

0.052

Total sperm count (×106)

515

159.58 (197.33)

89

185.42 (231.28)

-2.031

0.042

Grade A sperm (%)

515

5.37(10.51)

89

8.45(16.34)

-2.610

0.009

Progressive motility (%)

515

24.74 ± 14.96

89

28.73 ± 16.65

2.279

0.023

Total motility (%)

515

32.04 ± 18.03

89

36.91 ± 20.86

2.297

0.022

Normal sperm morphology (%)

210

4.00(3.00)

48

4.00(3.00)

-1.417

0.156

Immature sperm nucleoprotein (%)

175

25.00(11.00)

43

25.00(15.00)

-0.978

0.328

Sperm DFI (%)

320

17.50(18.88)

64

11.75(18.95)

-2.171

0.030

  1. DFI: DNA fragmentation index.