Table 5 Two way ANOVA taking sperm motility (% of progressively motile sperm) as dependent variable and psychological distress and CYP1A1 gene polymorphisms as independent variable (n = 80)

Type III sum of squares

Degree of Freedom

Mean Square

F value

P value

Corrected Model

27926.20^a

5

5585.24

12.58

<0.001

Intercept

84058.13

1

84058.13

189.38

<0.001

CYP1A1*4C > A Polymorphism

7531.78

2

3765.89

08.48

<0.001

Distress

10528.13

1

10528.13

23.72

<0.001

Interaction of CYP1A1*4C > A Polymorphism with Distress

1141.34

2

570.67

01.28

0.283

Corrected Model

25028.29^b

5

5005.66

10.36

<0.001

Intercept

108286.74

1

108286.74

224.19

<0.001

CYP1A1*2C A > G Polymorphism

5692.88

2

2846.44

05.89

0.004

Distress

12091.25

1

12091.21

25.03

<0.001

Interaction of CYP1A1*2C A > G Polymorphism with Distress

268.55

2

134.27

0.27

0.758