Table 8

Analysis of variance for the three planned comparisons

Source
df
SS
MS
F
P

Infection
3
1780.2
593.4
2.84
0.038
     Contrast 1
1
1639.6
1639.6
7.85
0.006
     Contrast 2
1
112.1
112.1
0.54
0.464
     Contrast 3
1
28.5
28.5
0.14
0.712
Error
396
82,729.7
208.9


Total
399
84,509.9




df, degrees of freedom; F, test statistic; MS, mean squares; SS, sums of squares.

Bewick et al. Critical Care 2004 8:130   doi:10.1186/cc2836