Characteristics of participants in two population-based surveys in Shanghai, China
| Characteristics | First survey | Second survey | p Value between surveys* | |||
|---|---|---|---|---|---|---|
| Men (N=5050) | Women (N=7279) | Men (N=3461) | Women (N=3962) | In men | In women | |
| Age (years, mean±SD) | 54.8±10.8 | 53.1±10.3 | 54.7±9.5 | 54.7±9.1 | 0.55 | <0.0001 |
| Resident site (%) | ||||||
| Urban | 71.1 | 63.0 | 2.4 | 72.0 | ||
| Rural | 29.0 | 37.0 | 27.7 | 28.0 | 0.19 | <0.0001 |
| Education (%) | ||||||
| No formal education | 4.1 | 18.4 | 3.2 | 9.5 | ||
| Primary school | 18.2 | 23.0 | 14.7 | 17.7 | ||
| Middle school | 35.3 | 31.1 | 45.7 | 45.2 | ||
| High school | 27.6 | 22.6 | 27.6 | 23.8 | ||
| Colleague or above | 14.8 | 4.9 | 8.8 | 3.9 | 0.0025 | <0.0001 |
| Per capita income (yuan/month, %) | ||||||
| <1000 | 37.0 | 45.5 | 4.9 | 4.0 | ||
| 1000–2999 | 38.3 | 38.4 | 41.8 | 46.7 | ||
| 3000–5000 | 22.5 | 17.9 | 33.2 | 33.3 | ||
| >5000 | 2.2 | 1.3 | 20.0 | 16.0 | <0.0001 | <0.0001 |
| Family history of type 2diabetes | 12.3 | 13.1 | 16.4 | 19.0 | <0.0001 | <0.0001 |
| Prevalence of type 2 diabetes (%) | 13.6 | 10.3 | 17.4 | 14.1 | <0.0001 | <0.0001 |
| Prevalence of hypertension (%) | 34.8 | 28.3 | 41.8 | 37.1 | <0.0001 | <0.0001 |
| Cigarette smoking (%) | 61.4 | 1.7 | 62.6 | 1.8 | 0.22 | 0.93 |
| Alcohol drinking (%) | 40.4 | 2.4 | 54.0 | 5.0 | <0.0001 | <0.0001 |
| Leisure-time activity (%) | 13.3 | 13.1 | 10.8 | 9.0 | 0.0009 | <0.0001 |
*p Value for Wilcoxon tests or χ2 tests.
p Values less than 0.05 (shown in italic typeface) were considered as a test of significance based on two sides.