Table 5 Differential analysis of knowledge of fertility policy
| 听 | Chen, X 2016 | Yu, J 2016 | Ji, Q 2019 | X2 | P |
|---|---|---|---|---|---|
Know very much | 323(41.20%) | 106(80.92%) | 64(21.33%) | 143.725 | 0.000 |
Know a little | 346(44.13%) | 21(16.03%) | 155(51.67%) | ||
Were not aware | 115(14.67%) | 4(3.05%) | 81(27.00%) | ||
Total | 784(100%) | 131(100%) | 300(100%) |