N= ALL Mean STD N= Gram(-) Mean SEM N= Gram(+) Mean SEM Unknown  P**=    N= Mean  SEM
Age 53 58.8 18 14 56.9 5.4 17 56.1 4.4 22 62.0 3.5 0.91
ApacheII 53 21.9 7.1 14 24.8 1.5 17 23.5 1.6 22 18.8 1.6 0.56
Tmaxwithin24hrs.of admission 53 100.7 1.9 14 101.1 0.6 17 101.1 0.4 22 100.1 0.4 0.97
      F   M     F   M     F   M     F   M  
Gender 53 25 28 14 5 9 17 6 11 22 14 8 0.99
    Black White   Black White   Black White   Black White  
Ethnicity* 50 30 20 11 7 4 17 8 9 22 15 7 0.86
Note: *There were 2 asians and 1 hispanic not included above.
**P values calculated by type t-test for all continuous variables.
For categorical variables, P values are by Pearson Chi- square. All p values compare gram-negative vs. gram-positive groups
Table 1: Clinical Characteristics of enrolled patients.