AVP and septic shock: This was confirmed by multivariate linear regression analysis adjusted for gestational age, birth weight, SGA, delivery mode and umbilical artery pH (beta coefficient 0.16, 95%-CI -0.14 - 0.45, p = 0.30), Copeptin concentrations did not significantly differ between EOS infants with septic shock or with positive blood cultures compared to the rest of EOS infants (p >0.05).