Table 1.
Characteristics of the study population and PM2.5 concentration
| Variables | Value |
|---|---|
| Total | 1449 |
| Age (mean±SD) | 83±12 |
| Sex | |
| Men (n) | 687 |
| Women (n) | 762 |
| Education in Years (n, median(Q1-Q3)) | 0(0-4) |
| BMI(kg/m2, mean±SD) | 21.4±13.2 |
| County | |
| Chengmai, Hainan Province (n) | 84 |
| Sanshui, Guangdong Province (n) | 123 |
| Yongfu, Guangxi Province (n) | 98 |
| Mayang, Hunan Province (n) | 97 |
| Rudong, Jiangsu Province (n) | 177 |
| Zhongxiang, Hubei Province (n) | 214 |
| Xiayi, Henan Province (n) | 417 |
| Laizhou, Shandong Province (n) | 239 |
| Smoking status | |
| Current smoker (n) | 296 |
| Former smoker (n) | 413 |
| Drinking status | |
| Current drinker(n) | 285 |
| Former drinker (n) | 350 |
| Residence | |
| Rural (n) | 1201 |
| Exercise status | |
| Exercises regularly (n) | 279 |
| Diabetes | |
| Prevalence (%) | 10.1 |
| Fasting glucose (mmol/L, mean±SD) | 5.11±1.82 |
| PM2·5 (μg/L, median (Q1-Q3)) | 56 (43-70) |