Table 3 The relationship between IDA-associated factors and ECC
From: Iron deficiency anemia associated factors and early childhood caries in Qingdao
| Â | Wald (x2) | P | OR (95% CI) |
|---|---|---|---|
IDA and ECC | |||
 Duration of breastfeeding up to age 2 | 11.379 | 0.001 | 3.453 (1.681–7.094) |
 The history of IDA at age 2 or below | 23.576 | < 0.001 | 8.762 (3.648–21.041) |
 IDA history during pregnancy | 36.634 | < 0.001 | 4.913 (2.934–8.226) |
 Annual family income | |||
  Less than 50,000 RMB | 8.620 | 0.003 | 3.421 (1.505–7.775) |
  50,000 to 100,000 RMB | 0.299 | 0.585 | 1.243 (0.570–2.713) |
  10,0000 to 200,000 RMB | 0.225 | 0.635 | 1.210 (0.551–2.653) |
  More 200,000 RMB |  |  | 1 |
 Children's no intake of iron supplements | 9.361 | 0.002 | 5.602 (1.858–16.896) |
Only ECC | Â | Â | Â |
 The history of IDA at age 2 or below | 29.431 | < 0.001 | 24.655 (7.745–78.486) |
Only IDA | Â | Â | Â |
 Duration of breastfeeding up to age 2 | 6.977 | 0.008 | 1.697 (1.146–2.511) |
 The history of IDA at age 2 or below | 24.097 | < 0.001 | 4.502 (2.469–8.210) |
 Annual family income | |||
  Less than 50,000 RMB | 6.798 | 0.009 | 1.630 (1.129–2.353) |
  50,000 to 100,000 RMB | 5.774 | 0.016 | 1.450 (1.071–1.963) |
  10,0000 to 2000,00 RMB | 4.323 | 0.038 | 1.373 (1.018–1.851) |
  More 200,000 RMB |  |  |  |
 Children's no intake of iron supplements | 7.010 | 0.008 | 1.585 (1.127–2.229) |