Respondents’ reasons for buying iodised salt (IS) (%)
| Province | City | Number of choosing IS | IS choosing rate | Reasons | |||
|---|---|---|---|---|---|---|---|
| Prevent IDD | Benefit for children's IQ | Good quality | Others | ||||
| Heilongjiang | Harbin | 183 | 91.5 | 36.6 | 3.8 | 1.6 | 60.1 |
| Jilin | Changchun | 175 | 86.6 | 48.6 | 9.7 | 6.3 | 0 |
| Beijing | – | 202 | 86.7 | 61.4 | 12.9 | 9.4 | 28.2 |
| Hebei | Shijiazhuang | 174 | 87.0 | 67.8 | 7.5 | 12.1 | 14.4 |
| Shanxi | Taiyuan | 189 | 95.0 | 13.8 | 0 | 14.3 | 70.9 |
| Shandong | Ji'nan | 187 | 93.5 | 73.3 | 27.3 | 20.3 | 11.2 |
| He'nan | Zhengzhou | 177 | 88.5 | 54.8 | 15.3 | 26.6 | 27.7 |
| Jiangsu | Nanjing | 180 | 72.6 | 64.4 | 25.0 | 23.9 | 7.8 |
| Anhui | Hefei | 178 | 84.8 | 32.0 | 0.6 | 5.6 | 61.8 |
| Hubei | Wuhan | 163 | 75.1 | 41.7 | 8.0 | 24.5 | 29.4 |
| Zhejiang | Hangzhou | 66 | 32.8 | 57.6 | 16.7 | 21.2 | 0 |
| Jiangxi | Nanchang | 184 | 86.8 | 52.2 | 7.6 | 13.6 | 8.7 |
| Hu'nan | Changsha | 146 | 72.3 | 56.2 | 6.8 | 5.5 | 39.7 |
| Guangdong | Guangzhou | 124 | 61.7 | 39.5 | 1.6 | 46.0 | 3.2 |
| Guangxi | Nanning | 170 | 78.0 | 38.8 | 4.1 | 6.5 | 46.5 |
| Capital city total | 2498 | 79.5 | 79.5 | 9.8 | 15.0 | 29.0 | |
| Hebei | Tangshan | 208 | 94.1 | 81.7 | 17.3 | 9.6 | 5.8 |
| Tianjin | – | 200 | 83.7 | 75.5 | 28.5 | 27.0 | 6.5 |
| Shandong | Yantai | 186 | 93.0 | 90.3 | 3.2 | 8.1 | 4.8 |
| Jiangsu | Nantong | 153 | 73.9 | 46.4 | 5.9 | 2.6 | 47.7 |
| Shanghai | – | 108 | 49.3 | 25.9 | 6.5 | 29.6 | 48.1 |
| Zhejiang | Zhoushan | 86 | 42.8 | 68.6 | 12.8 | 18.6 | 0 |
| Guangdong | Shenzhen | 144 | 71.6 | 22.9 | 0.7 | 3.5 | 42.4 |
| Guangxi | Beihai | 155 | 66.2 | 21.9 | 2.6 | 18.7 | 58.1 |
| Coastal city total | 1240 | 72.0 | 72.0 | 10.6 | 14.1 | 25.0 | |
| Total | 3738 | 76.8 | 51.9 | 10.0 | 14.7 | 27.7 | |
Note: The reason for choosing IS was a multiple choice question.