Figure 4From: Antimicrobial treatment for ventilator-associated tracheobronchitis: a randomized, controlled, multicenter studyKaplan-Meier survival curves for patients randomly assigned to the antibiotic and control groups. The dashed line represents the cumulative survival for patients randomly assigned to the antibiotic group, the solid line represents the cumulative survival for patients randomly assigned to the no antibiotic group, and + represents censored patients. P = 0.047 by the log rank test. ICU, intensive care unit.Back to article page