Table 4b: Discriminant validity of quality of life-related to teeth.

Tooth Condition
(minimum-maximum)
Mean (SD) P-value
Periodontitis Severity
Mild (n=185) Moderate (n=78) Severe (n=5)
Total Score (0–55) 20.18 (16.18) 16.91 (13.44) 31.20 (18.21) 0.135
Influence on outlook (0–5) 2.10 (1.95) 2.06 (1.86) 3.20 (1.78) 0.394
Influence on self-esteem (0–5) 1.74 (1.86) 1.62 (1.77) 2.80 (2.16) 0.423
Influence on general health (0–5) 2.03 (1.90) 1.87 (1.65) 3.20 (1.78) 0.093
Influence on choice of food (0–5) 2.44 (1.79) 2.12 (1.57) 3.40 (1.51) 0.150
Influence on chewing of harder food (0–5) 2.57 (1.87) 2.32 (1.84) 3.20 (1.64) 0.387
Influence on speaking difficulties (0–5) 1.38 (1.77) 0.89 (1.47) 1.80 (2.04) 0.088
Influence on family life (0–5) 1.07 (1.60) 0.79 (1.42) 2.80 (1.92) 0.020*
Influence on professional life (0–5) 1.42 (1.77) 1.17 (1.68) 2.20 (1.48) 0.285
Influence on social life (0–5) 1.38 (1.76) 1.20 (1.59) 2.80 (1.92) 0.145
Influence on mood (0–5) 1.86 (1.79) 1.28 (1.61) 2.80 (2.16) 0.019*
Influence on anxiety (0–5) 1.89 (1.85) 1.53 (1.68) 3.00 (2.12) 0.144

P-value from the Kruskal-Wallis test results. *Statistically significant at P<0.05. SD: standard deviation.