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. 2014 May 30;15:65. doi: 10.1186/1471-2156-15-65

Table 2.

Analysis for additive interactions between regions

Region Congenics Observed incidence Expected incidence Test score (χ2, P -value)
Region I
 
  
  
  
I
 5
 0.04
  
  
I.III
 5 × 3
 0.34
 0.31
 0.42, ns
I.IV
 5 × B-81
 0.11
 0.03
 5.96, P < 0.02
I.V
 5 × 7
 0.08
 0.13
 1.44, ns
Region II
 
  
  
  
II
 6
 0.19
  
  
II.IV
 6 × B-81
 0.10
 0.18
 2.28, ns
Region III
 
  
  
  
III
 3*
 0.32
  
  
III.I
 5 × 3
 0.34
 0.31
 0.42, ns
III.IV
 1
 0.22
 0.31
 3.37, ns
III.V
 3 × 7
 0.26
 0.41
 5.95, P < 0.02
Region IV
 
  
  
  
IV
 B-81*
 0.04
  
  
IV.I
 5 × B-81
 0.11
 0.03
 5.96, P < 0.02
IV.II
 6 × B-81
 0.10
 0.18
 2.28, ns
IV.III
 1
 0.22
 0.31
 3.37, ns
Region V
 
  
  
  
V
 7
 0.14
  
  
V.I
 5 × 7
 0.08
 0.13
 1.44, ns
V.III 3 × 7 0.26 0.41 5.95, P < 0.02

*Previously described congenic strains [16,27]; ns = no statistically significant difference between observed and expected values. Positive epistatic interactions are in green and negative epistatic interactions are in red.