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Table 1 Receiver operating characteristic (ROC) for each sperm quality parameter to predict fertilisation rate on day 2

From: Sperm DNA damage compromises embryo development, but not oocyte fertilisation in pigs

 

AUC (95% CI)

P value

Cut-off value (%)

Sensitivity (95% CI)

Specificity (95% CI)

ODDs ratio

Morphology

0.5556 (0.3174–0.7938)

0.6442

94.53

58.33% (31.95–80.67%)

66.67% (39.06–86.19%)

1.750

Total motility

0.8750 (0.7246–1.000)

0.0018

88.61

75.00% (46.77–91.11%)

91.67% (64.61–99.57%)

9.000

Progressive motility

0.5625 (0.3211–0.8039)

0.6033

78.14

41.67% (19.33–68.05%)

91.67% (64.61–99.57%)

5.000

Viability

0.6806 (0.4476–0.9135)

0.1333

90.03

66.67% (39.06–86.19%)

75.00% (46.77–91.11%)

2.667

OTM alkaline-neutral Comet

0.5833 (0.3458–0.8208)

0.4884

10.80

25.00% (8.894–53.23%)

91.67% (64.61–99.57%)

3.000

OTM neutral Comet

0.5486 (0.3081–0.7892)

0.6861

3.658

33.33% (13.81–60.94%)

91.67% (64.61–99.57%)

4.000

Combination (Component 1)

0.5903 (0.3543–0.8261)

0.5529

0.5590

25.00% (8.89–53.35%)

91.67% (64.61–99.57%)

3.000

  1. AUC area under the curve; CI confidence interval; OTM olive tail moment