Table 3 Construct validity: rank correlations between total scale and subscale scores, and global rating of oral health and overall wellbeing on ISF:8 and ISF:16 (n = 136)

r *

p-value

r *

p-value

Total scale

   ISF:8

0.47

<0.001

0.32

<0.001

   ISF:16

0.49

<0.001

0.33

<0.001

Subscale

<0.001

Oral Symptoms

<0.001

   ISF:8

0.35

<0.001

0.37

<0.001

   ISF:16

0.53

<0.001

0.27

<0.001

Functional limitations

<0.001

   ISF:8

0.31

<0.001

0.09

0.26

   ISF:16

0.35

<0.001

0.20

0.02

Emotional well-being

<0.001

   ISF:8

0.35

<0.001

0.31

<0.001

   ISF:16

0.40

<0.001

0.34

<0.001

Social well-being

<0.001

<0.001

   ISF:8

0.35

<0.001

0.17

<0.001

   ISF:16

0.28

<0.001

0.29

<0.001