Statistical analysis
SD, trauma
Sample size calculation was based on the variance from previous clinical trial in a similar cohort of trauma patients (SD of 27.2 for CD11b and SD of 20.1 for CD62L). A sample size of 20 for each group gives 80% power to detect a difference of 24.7 for CD11b or 18.2 for CD62L. Such differences represent clinically important differences in neutrophil activation. Data analysis was performed using SPSS version 23 (SPSS, Chicago, Illinois). Patient admission characteristics and outcomes were compared by Mann–Whitney 