Table 6.
Comparison of self-reported and clinically-examined numbers of teeth by oral condition and oral hygiene in subjects of J-MICC Study
| Male (n = 80) | Female (n = 106) | |||||
|---|---|---|---|---|---|---|
| n | ρ a | p-value | n | ρ a | p-value | |
| Oral condition | ||||||
| Clinically-examined number of teeth | ||||||
| 0 ~ 19 | 6 | 0.22 | 0.67 | 5 | 1.00 | - |
| 20 ~ 32 | 74 | 0.68 | <0.01 | 101 | 0.65 | <0.01 |
| CPI | ||||||
| 0 | 20 | 0.57 | <0.01 | 43 | 0.55 | <0.01 |
| 1,2 | 51 | 0.75 | <0.01 | 55 | 0.74 | <0.01 |
| 3,4 | 9 | 0.55 | 0.12 | 5 | 0.50 | 0.39 |
| Oral hygiene | ||||||
| Frequency of tooth brushing | ||||||
| Once a day | 19 | 0.76 | <0.01 | 14 | 0.44 | 0.11 |
| Twice a day | 44 | 0.72 | <0.01 | 49 | 0.70 | <0.01 |
| 3 or more times a day | 17 | 0.66 | <0.01 | 43 | 0.75 | <0.01 |
| Frequency of dental scaling visit | ||||||
| None | 49 | 0.76 | <0.01 | 44 | 0.75 | <0.01 |
| Once or twice a year | 20 | 0.54 | 0.01 | 41 | 0.70 | <0.01 |
| 3 or more times a year | 11 | 0.89 | <0.01 | 21 | 0.45 | 0.04 |
aSpearman’s rank correlation coefficient
CPI community periodontal index