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Table 8 Analysis of variance for the three planned comparisons

From: Statistics review 9: One-way analysis of variance

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

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