Table 2. Dental caries experience and prevalence of primary teeth of surveyed children with different districts and genders.
| Group | n | dt | mt | ft | dmft (SD) | p Value (F)* | dmft > 0 (%) | p Value (χ2)* | |
|---|---|---|---|---|---|---|---|---|---|
| Region | Beizhen | 1,418 | 6.00 | 0.37 | 0.05 | 6.42 (3.58) | <0.001 | 92.9 | <0.001 |
| Dahua | 920 | 7.38 | 0.05 | 0.09 | 7.52 (4.90) | (105.25) | 88.4 | (84.33) | |
| Linxia | 1,122 | 4.23 | 0.08 | 0.08 | 4.40 (3.64) | 80.9 | |||
| Linxiang | 1,476 | 5.59 | 0.12 | 0.19 | 5.89 (4.31) | 87.3 | |||
| Gender | Boys | 2,544 | 5.66 | 0.17 | 0.10 | 5.93 (4.25) | 0.696 | 86.5 | 0.009 |
| Girls | 2,392 | 5.81 | 0.17 | 0.11 | 6.09 (4.18) | (0.152) | 88.9 | (6.81) | |
| Total | 4,936 | 5.73 | 0.17 | 0.11 | 6.01 (4.22) | 87.7 |
Notes.
*
p value of comparison of dmft.
**
p value of comparison of dmft > 0 (%).