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Table 2 Correlation analyses between sperm parameters and headless sperm proportion

From: Semen parameters are seriously affected in acephalic spermatozoa syndrome

 

Median

(25th centile,75th centile)

Correlation

coefficient

P

Age (year)

30(27–32)

− 0.09212

0.0678

Abstinence delay (day)

4(3–5)

− 0.03669

0.4700

Semen volume (ml)

3.3(2.5–4.1)

0.06314

0.2134

Sperm concentration (millions /ml)

73.8(36.9–131.6)

−0.4308

< 0.0001

Total sperm count (millions/ejaculate)

236.5(108.7–419.4)

−0.4618

< 0.0001

Sperm vitality (%)

77(70–81)

−0.1718

0.0007

Progressive motility(%)

49(37–61)

−0.2740

< 0.0001

Normal sperm morphology(%)

8(2–6)

−0.1752

0.0006

VCL (μm/sec)

35.1(25.0–45.2)

−0.3038

< 0.0001

VAP (μm/sec)

25.3(17.6–32.7)

−0.2991

< 0.0001

ALH (μm/sec)

3.14(2.3–3.9)

−0.3517

< 0.0001

BCF (Hz)

9.9(7.6–12.1)

−0.3718

< 0.0001

  1. Correlation results between sperm parameters and headless sperm proportion are expressed by the Spearman correlation coefficient and its corresponding p value. VSL Straight-line velocity, VCL Curvilinear velocity, VAP Average path velocity, BCF Beat cross frequency, ALH Amplitude of lateral head displacement