Table 1.
Mean of dmft score and Impact on oral health-related quality of life according to independent variables
| Variables | N (%) | dmft score | P-value | Impact on oral health-related quality of life | P-value | ||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||||
| Gender | |||||||
| Boys | 189 (54%) | 3.93 | 4.22 | 0.935* | 11.27 | 6/60 | 0.09** |
| Girls | 161 (46%) | 3.96 | 4.12 | 12.59 | 7/22 | ||
| Child’s age | |||||||
| 2 ≤ age < 3 | 51 (14%) | 1.94 | 2.28 | > 0.0001**** | 8.21 | 4.87 | > 0.0002*** |
| 3 ≤ age < 4 | 94 (27%) | 3.10 | 3.48 | 11.54 | 6.63 | ||
| 4 ≤ age < 5 | 104 (30%) | 3.84 | 3.28 | 12.88 | 6.68 | ||
| 5 ≤ age < 6 | 101 (29%) | 6.07 | 5.23 | 13 | 7.67 | ||
| Mother’s education | |||||||
| Illiterate/ Elementary | 21 (6%) | 8.05 | 5.35 | > 0.0001**** | 13.85 | 6.62 | 0.001*** |
| Secondary | 18 (5%) | 6.38 | 3.36 | 16.22 | 7.28 | ||
| Diploma | 91 (26%) | 4.96 | 4.39 | 13.35 | 7.62 | ||
| University | 220 (63%) | 2.93 | 3.57 | 10.72 | 6.33 | ||
| Father’s education | |||||||
| Illiterate/ Elementary | 16 (4%) | 6.87 | 4.47 | > 0.0001**** | 15.81 | 8.19 | 0.004*** |
| Secondary | 34 (10%) | 6.35 | 4.82 | 13.50 | 7.45 | ||
| Diploma | 84 (24%) | 5.34 | 4.68 | 13.20 | 7.21 | ||
| University | 216 (62%) | 2.81 | 3.35 | 10.81 | 6.40 | ||
| Ethnicity | |||||||
| Fars | 287 (82%) | 3.60 | 4.03 | 0.002**** | 11.78 | 6.93 | 0.783*** |
| Turkmen | 33 (9.5%) | 4.93 | 3.73 | 11.96 | 7.06 | ||
| Sistani | 30 (8.5%) | 6.16 | 5.16 | 12.66 | 6.81 | ||
| Birth order | |||||||
| First child | 228 (65%) | 3.83 | 3.98 | 0.457*** | 11.81 | 6.82 | 0.450*** |
| Second child | 106 (30%) | 3.97 | 4.54 | 12.26 | 7.23 | ||
| Third child | 16 (5%) | 5.43 | 4.21 | 10.31 | 6.20 | ||
*Calculated by independent T-test
**Calculated by Mann–Whitney test
***Calculated by Kruskal Wallis test
****Calculated by analysis of variance (ANOVA) test