| Quality of Life in Patients with Periodontitis (minimum-maximum) |
Mean (SD) |
Reliability |
Cronbach’s α |
Test–retest (n=27) |
| – |
Alpha if deleted* |
CITC* |
– |
– |
| Related to Gums |
– |
– |
– |
– |
– |
| Total Score (0–55) |
16.08 (14.38) |
– |
– |
0.929 |
0.880 |
| Influence on outlook (0–5) |
1.40 (1.77) |
0.922 |
0.716 |
– |
– |
| Influence on self-esteem (0–5) |
1.18 (1.65) |
0.925 |
0.648 |
– |
– |
| Influence on general health (0–5) |
2.07 (1.80) |
0.924 |
0.683 |
– |
– |
| Influence on choice of food (0–5) |
2.20 (1.84) |
0.928 |
0.591 |
– |
– |
| Influence on chewing of harder food (0–5) |
2.24 (1.90) |
0.924 |
0.694 |
– |
– |
| Influence on speaking difficulties (0–5) |
1.00 (1.58) |
0.923 |
0.716 |
– |
– |
| Influence on family life (0–5) |
0.86 (1.49) |
0.922 |
0.726 |
– |
– |
| Influence on professional life (0–5) |
0.97 (1.58) |
0.922 |
0.721 |
– |
– |
| Influence on social life (0–5) |
1.05 (1.59) |
0.921 |
0.752 |
– |
– |
| Influence on mood (0–5) |
1.48 (1.73) |
0.920 |
0.764 |
– |
– |
| Influence on anxiety (0–5) |
1.56 (1.78) |
0.917 |
0.823 |
– |
– |
| Related to Teeth |
– |
– |
– |
– |
– |
| Total Score (0–55) |
19.44 (15.57) |
– |
– |
0.942 |
0.878 |
| Influence on outlook (0–5) |
2.11 (1.92) |
0.938 |
0.713 |
– |
– |
| Influence on pride (0–5) |
1.72 (1.84) |
0.935 |
0.788 |
– |
– |
| Influence on general health (0–5) |
2.19 (1.84) |
0.937 |
0.737 |
– |
– |
| Influence on choice of food (0–5) |
2.36 (1.73) |
0.938 |
0.709 |
– |
– |
| Influence on chewing of harder food (0–5) |
2.51 (1.86) |
0.940 |
0.670 |
– |
– |
| Influence on speaking difficulties (0–5) |
1.25 (1.70) |
0.939 |
0.688 |
– |
– |
| Influence on family life (0–5) |
1.02 (1.57) |
0.937 |
0.744 |
– |
– |
| Influence on professional life (0–5) |
1.36 (1.74) |
0.935 |
0.778 |
– |
– |
| Influence on social life (0–5) |
1.36 (1.72) |
0.934 |
0.803 |
– |
– |
| Influence on mood (0–5) |
1.71 (1.76) |
0.935 |
0.797 |
– |
– |
| Teeth condition influence on anxiety (0–5) |
1.80 (1.82) |
0.934 |
0.810 |
– |
– |
* Cronbach's α for subscales if an item is removed. CITC: corrected item-total correlation; SD: standard deviation.