Table 2 Dental caries prevalence and experience of surveyed children with different ages and genders
From: Dental caries status of students from migrant primary schools in Shanghai Pudong New Area
Variable | Group | n | % dmft > 0 | dt | mt | ft | dmft(SD) |
|---|---|---|---|---|---|---|---|
Primary teeth | |||||||
Age (years old) | 7–8 | 376 | 81.4* | 4.20 | 0.01 | 0.02 | 4.22 (3.57)** |
9–10 | 436 | 81.0* | 3.29 | 0.02 | 0.02 | 3.33 (2.73)** | |
11–12 | 511 | 41.1* | 1.13 | 0.00 | 0.01 | 1.13 (1.83)** | |
Gender | Boy | 745 | 67.0 | 2.69 | 0.01 | 0.01 | 2.72 (2.92) |
Girl | 578 | 64.0 | 2.74 | 0.00 | 0.02 | 2.76 (3.14) | |
Total | 1323 | 65.7 | 2.71 | 0.01 | 0.01 | 2.74 (3.02) | |
Permanent teeth | |||||||
Age (years old) | 7–8 | 376 | 14.6*** | 0.22 | 0.00 | 0.00 | 0.22 (0.61)**** |
9–10 | 436 | 32.1*** | 0.47 | 0.00 | 0.01 | 0.48 (0.83)**** | |
11–12 | 511 | 33.5*** | 0.56 | 0.00 | 0.00 | 0.56 (0.95)**** | |
Gender | Boy | 745 | 23.0***** | 0.35 | 0.00 | 0.00 | 0.35 (0.76)****** |
Girl | 578 | 33.7***** | 0.55 | 0.00 | 0.01 | 0.55 (0.91)****** | |
Total | 1323 | 27.7 | 0.43 | 0.00 | 0.00 | 0.44 (0.84) | |
Primary and permanent teeth | 1323 | 74.7 | 3.15 | 0.01 | 0.00 | 3.17(3.12) |