Fig. 3

Heart rate variability (HRV) modulation dissociates from inflammation and respiratory failure in non-survivors. A and B Intraindividual correlation scores of HRV and each indicated laboratory parameter (top) and signed negative logarithmic P value (bottom). Dashed lines show P value of 0.05. C Comparison of all correlations of HRV with laboratory parameters between survivors and non-survivors. Unpaired t-test of − log10 P values was used for statistical comparison. D–E Correlation analyses of HRV with CRP (C), Procalcitonin (D) and blood carbon dioxide (E) separated by survivors and non-survivors. Pearson’s correlation analysis was performed. Group comparisons were performed by unpaired t-test of signed − log10 of the P value of intraindividual correlations. P values of correlation analyses and comparisons between survivors and non-survivors are depicted in the figure. *P < 0.05, **P < 0.01, ***P < 0.001