The basic demographic information of the subjects
| N | Mean±SD/% | |
| Age | 434 | 69.41±6.45 |
| Gender | ||
| Male | 180 | 41.47 |
| Female | 254 | 58.53 |
| Marital status | ||
| Stable | 313 | 72.12 |
| Unstable | 121 | 27.88 |
| Education | ||
| Less than 1 year | 81 | 18.66 |
| 1–6 years | 272 | 62.68 |
| 6 years and above | 81 | 18.66 |
| Individual annual income (¥) | ||
| ≤2800 | 90 | 20.73 |
| >2800 | 344 | 79.27 |
| Job | ||
| Farmer | 198 | 45.62 |
| Worker | 100 | 23.04 |
| Retired | 72 | 16.59 |
| Other | 64 | 14.75 |
| Other chronic disease | ||
| Yes | 176 | 40.55 |
| No | 258 | 59.45 |
| Family history of diabetes | ||
| Yes | 36 | 8.29 |
| No | 398 | 91.71 |
| History of hyperglycaemia | ||
| Yes | 28 | 6.45 |
| No | 406 | 93.55 |