Table 3. Analysis of correlation of hospital-acquired pneumonia (HAP) rates among critically ill patients with CPIS (N=225).

CPIS: Clinical Pulmonary Infection Score

Variable		HAP rates		Correlation (Kendall’s tau_b)	P value
		No	Yes
CPIS	Low risk	151	41	0.0335	0.001 (significance)
	High risk	12	21