Fig. 2From: Treatment of severe hospital-acquired and ventilator-associated pneumonia: a systematic review of inclusion and judgment criteria used in randomized controlled trialsVariability of signs and symptoms used for definition of hospital-acquired pneumonia/ventilator-associated pneumonia (HAP/VAP) (n = 27 studies). a Frequency of signs and symptoms used as HAP/VAP diagnostic criteria. b Number of signs and symptoms required for HAP/VAP diagnosis. CPIS Clinical Pulmonary Infection ScoreBack to article page