Table 5.
Comparison of self-reported and clinically-examined numbers of teeth by oral condition and oral hygiene in subjects of a regular company medical checkup
| Male (n = 809) | Female (n = 506) | |||||
|---|---|---|---|---|---|---|
| n | ρ a | p-value | n | ρ a | p-value | |
| Oral condition | ||||||
| Clinically-examined number of teeth | ||||||
| 0 ~ 19 | 64 | 0.70 | <0.01 | 26 | 0.54 | <0.01 |
| 20 ~ 32 | 745 | 0.61 | <0.01 | 480 | 0.63 | <0.01 |
| CPI | ||||||
| 0 | 34 | 0.72 | <0.01 | 48 | 0.69 | <0.01 |
| 1,2 | 557 | 0.66 | <0.01 | 384 | 0.63 | <0.01 |
| 3,4 | 218 | 0.78 | <0.01 | 74 | 0.75 | <0.01 |
| Oral hygiene | ||||||
| Frequency of tooth brushing | ||||||
| Once a day | 230 | 0.69 | <0.01 | 41 | 0.74 | <0.01 |
| Twice a day | 436 | 0.68 | <0.01 | 263 | 0.68 | <0.01 |
| 3 or more times a day | 143 | 0.76 | <0.01 | 202 | 0.62 | <0.01 |
| Frequency of dental scaling visit | ||||||
| None | 404 | 0.67 | <0.01 | 215 | 0.74 | <0.01 |
| Once or twice a year | 306 | 0.67 | <0.01 | 224 | 0.54 | <0.01 |
| 3 or more times a year | 99 | 0.80 | <0.01 | 67 | 0.71 | <0.01 |
aSpearman’s rank correlation coefficient
CPI community periodontal index