Table 1. Analysis of CPIS of the critically ill patients (N=225).

ARDS: acute respiratory distress syndrome; CPIS: Clinical Pulmonary Infection Score

Characteristics		f	%
Patient temperature	≥36.5 degrees C and ≤38.4 degrees C	97	43.1
	≥38.5 degrees C and ≤38.9 degrees C	77	34.2
	≥39 degrees C	51	22.7
WBC	<4,000/mm3 or >11,000/mm3	105	46.7
	<4,000/mm3 or >11,000/mm3 with ≥500 bands	26	11.6
	≥4,000/mm3 and ≤11,000/mm3	94	41.8
Tracheal secretions	large and purulent	25	11.1
	Moderate	79	35.1
	No secretion or mild	121	53.8
PaO2 (mmHg)/FiO2	>240 or ARDS present	26	11.6
	≤240 or no ARDS present	199	88.4
Chest X-ray	localized infiltrate	27	12.0
	No infiltrate	122	54.2
	Patchy or diffuse infiltrate	86	38.2
Quantitative pathogenic bacterial culture growth from tracheal aspirate	>10000	45	20.0
	≤10000 or no growth	165	73.3
	Bacteria seen on Gram stain	15	6.7
CPIS	Low risk	192	85.3
	High risk	33	14.7