Table-I.

Characteristics of the patients at enrollment (n=125).

	VAP(+) (n=56) mean	VAP(-) (n=69) mean	P
Age (years)	61±18	51±20	0.003*
BMI	27±6	27± 5	0.646
APACHE II	21.1±7.5	22.0±8.7	0.724
CPIS	6.58±1.1	3.17±1.7	0.0001

^*p<0.05, BMI: Body Mass Index.

APACHE: Acute Physiology and

Chronic Health Evaluation.

CPIS: Clinical Pulmonary Infection Scores,

VAP: Ventilator-associated pneumonia.