Table 3 Selected community-acquired pneumonia performance measures over 4 years and results of χ² tests (contingency table p value and p values for years 2005, 2006 and 2007 compared with year 2004)

	Contingency table p value	2004	2005	2006	2007
Percentage of pneumonia patients who received their first dose of antibiotics within 4 h after arrival at the hospital		69	69	70	79
	0.311		0.975	0.830	0.106
Percentage of pneumonia patients who had blood cultures performed within 24 h prior to or after arrival at the hospital		71	72	86	85
	0.002		0.794	0.002	0.010
Percentage of pneumonia patients (cigarette smokers) who received smoking cessation advice or counselling during the hospital stay		41	61	93	86
	<0.001		0.095	<0.001	<0.001
Percentage of patients receiving a pneumococcal vaccination assessment and vaccination if eligible		34	72	81	89
	<0.001		<0.001	<0.001	<0.001
Composite measure (all or none)*			40	68	72
Composite measure (all or none)*	<0.001			<0.001	<0.001