Table 2 Immunization and micronutrient supplement of the female participants
| Â | Jiangsu | Hebei | Comparison | ||
|---|---|---|---|---|---|
| Â | N(%) | N(%) | Chi-square | ||
Immunized | Â | Â | Â | ||
 MMR | 894 | (88.4%) | 264 | (14.7%) | χ2 = 1450.13, P <0.01 |
 Tetanus | 341 | (33.7%) | 92 | (5.1%) | χ2 = 405.47, P <0.01 |
 HBV | 616 | (60.9%) | 585 | (32.6%) | χ2 = 212.16, P <0.01 |
Taking micronutrient supplement | Â | Â | Â | ||
 Folate | 424 | (41.9%) | 783 | (43.6%) | χ2 = 0.75, P >0.05 |
 Iron | 26 | (2.6%) | 103 | (5.7%) | χ2 = 14.78, P <0.01 |
 Calcium | 71 | (7.0%) | 202 | (11.3%) | χ2 = 13.18, P <0.01 |
 Multi-vitamin | 124 | (12.3%) | 44 | (2.5%) | χ2 = 110.66, P <0.01 |
 iodized salt | 815 | (80.6%) | 1153 | (64.2%) | χ2 = 82.84, P <0.01 |