Table 2

Initial risk class and mortality

Risk class	Hospital A		Hospital B		Hospital C		Hospital D
	% total	% dead	% total	% dead	% total	% dead	% total	% dead
PSI I	9.6	0	5.5	0	8.6	0	1.5	0
PSI II	10.9	0	12.3	0	13.8	0	15.4	0
PSI III^#	24	5.5	23.3	0	27.6	0	7.7	0
PSI IV^#	39.3	8.8	45.2	9.1	31	5.6	43.1	7.1
PSI V^#	16.2	21.6	13.7	30	19	27.3	32.3	14.3
Total		8.7		8.2		6.9		7.7

PSI: pneumonia severity index
^#: p=not significant