Table 3. Association between the variables age group and the occurrence of the lingual canal in incisor teeth in CBCS scans of the evaluated patients.
| Occurrence of the lingual canal | Age range (years) | χ2(gl) | ||||||
|---|---|---|---|---|---|---|---|---|
| <19 | 20–29 | 30–39 | 40–49 | 50–59 | 60–69 | ≥70 | ||
| No (n i (%)) | 3 (1.36) | 13 (5.88) | 26 (11.76) | 30 (13.57) | 72 (32.58) | 59 (26.70) | 18 (8.14) | 17.24 (6)** |
| Adjusted residuals | −0.20 ns | 0.00 ns | −1.80 ns | −3.10** | 2.30** | 1.80 ns | 0.20 ns | |
| Yes (ni (%)) | 2 (1.65) | 7 (5.79) | 23 (19.01) | 33 (27.27) | 25 (20.66) | 22 (18,18) | 9 (7.44) | |
| Adjusted residuals | 0.20 ns | 0.00 ns | 1.80 ns | 3.10** | 2.30** | 1.80 ns | 0.20 ns | |
Notes.
ni, Absolute frequency; %, Percentage; χ2, chi-square; df, degrees of freedom; ns, Not significant.
**
p < 0.01.