Incidence
Of the 200 patients, 36 (18%) developed VAP during their ICU stay. The overall incidence of VAP was 22.94 per 1,000 ventilator days. The incidence of VAP in MICU and CCU were 30.67 and 15.87 per 1,000 ventilator days respectively. There was no statistically significant difference in the incidence of VAP among MICU and CCU patients (two-tailed P value is 0.0976; Yates corrected Chi-square value is 2.74).