Table 2 Pearson correlation coefficients with 95% confidence interval (95% CI) between perceived chewing ability and oral health-related quality of life for groups of participants stratified by gender, age, years of schooling, number of teeth and presence of denture as indicated.
Variable | n | Correlation coefficient | 95% CI | |
|---|---|---|---|---|
Gender | Male | 141 | -0.60 | -0.70 to -0.48 |
Female | 348 | -0.40 | -0.49 to -0.31 | |
Age1 | <65 years | 252 | -0.45 | -0.55 to -0.35 |
≥65 years | 237 | -0.47 | -0.56 to -0.36 | |
Years of schooling | High school education | 256* | -0.40 | -0.49 to -0.29 |
>High school education | 222* | -0.53 | -0.62 to -0.43 | |
Number of teeth1 | <21 | 247 | -0.47 | -0.56 to -0.36 |
≥21 | 242 | -0.43 | -0.53 to -0.32 | |
Treatment demands | Fix/no denture or RPD maintenance group | 290 | -0.41 | -0.50 to -0.30 |
Needs replacement of new denture | 199 | -0.51 | -0.61 to -0.40 | |
Presence of denture(s) and Kennedy classification in RPDs | Fix/no denture | 140 | -0.38 | -0.51 to -0.23 |
Class I RPD in either/both jaws | 127 | -0.51 | -0.62 to -0.36 | |
Class IV RPD in either/both jaws | 12 | -0.68 | -0.90 to -0.17 | |
Other RPD in either/both jaws | 126 | -0.43 | -0.56 to -0.27 | |
CD/OD in either/both jaws | 84 | -0.52 | -0.66 to -0.35 |