Table 3: Two-way ANOVA showing the interactive effects of age and sex on each of pain intensity and physical function.

Independent Variables

Dependent Variables

Two-way ANOVA

df

F

p

Age

Pain intensity

3

2.87

0.04*

 

Physical function

3

4.74

< 0.001*

Sex

Pain intensity

1

0.38

0.54

 

Physical function

1

5.84

0.02*

Age*Sex

Pain intensity

3

0.06

0.98

 

Physical function

3

1.27

0.29

S.D: Standard deviation; df: Degrees of freedom for each estimate of variance; F: F ratios; p: Significance of F ratios.