Table 2.
Association between children’s socioeconomic background and ECC
| ECC,n (%) | Caries free,n (%) | ||
|---|---|---|---|
| Mother’s educational level | |||
| Complete high school | 149(61.8) | 92(38.2) | χ2 = 29.988; p = 0.000 |
| Under high school | 348(81.1) | 81(18.9) | |
| Father’s education level | |||
| Complete high school | 130(57.3) | 97(42.7) | χ2 = 51.257; p = 0.000 |
| Under high school | 367(82.8) | 76(17.2) | |
| Annual household income | |||
| ≥20000 RMB | 86(43.7) | 111(56.3) | χ2 = 135.743; p = 0.000 |
| <20000 RMB | 411(86.9) | 62(13.1) | |
| Family size | |||
| More than one children | 461(75.2) | 152(24.8) | χ2 = 3.951; p = 0.047 |
| One children | 36(63.2) | 21(36.8) | |
| Smoker in house | |||
| Yes | 167(69.9) | 72(30.1) | χ2 = 3.594; p = 0.058 |
| No | 330(76.6) | 101(23.4) | |
| Residence | |||
| Rural | 379(74.9) | 127(25.1) | χ2 = 0.563; p = 0.453 |
| Urban | 118(72.0) | 46(28.0) |