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Table 4 Logit model for a successful fertilization

From: Acrosome reaction and chromatin integrity as additional parameters of semen analysis to predict fertilization and blastocyst rates

Fertilization ≥60% Beta coefficient (CI)a SE p value
% ARIC 0.24 (0.10–0.37) 0.06 0.000
% Morphology 0.59 (0.14–1.04) 0.23 0.01
Constant −4.58 (−7.17 to −1.98) 1.32 0.001
  1. ARIC = Acrosome response to an ionophore challenge, a95% confidence interval. ROC cutoff = 0.65. AUC = 803. Sensitivity = 63.2%. Specificity = 80.6%. Positive predictive value = 80%. Negative predictive value = 64.1%. n = 69. Constant = βo from the logit model (Ln(basal probability of Fertilization ≥60% if ARIC and % morphology are equal to zero))