Table 1.
Characteristics of the total study participants by region.
| Characteristics | Inland (N = 1255) | Coast (N = 1248) | p |
|---|---|---|---|
| % | % | ||
| Gender | 0.410 | ||
| Males | 50.4 | 52.1 | |
| Females | 49.6 | 47.9 | |
| Ethnicity | 0.624 | ||
| Han group | 99.3 | 99.4 | |
| Non-Han group | 0.7 | 0.6 | |
| Age group (years old) | 0.133 | ||
| 18.0–29.9 | 22.9 | 25.4 | |
| 30–39.9 | 19.3 | 20.4 | |
| 40–49.9 | 20.2 | 21.6 | |
| 50–59.9 | 18.2 | 14.7 | |
| 60–69.9 | 10.8 | 10.5 | |
| ≥ 70 | 8.6 | 7.5 | |
| Educational level (years) | < 0.001 | ||
| ≤ 9 | 54.4 | 55.4 | |
| 10–12 | 23.5 | 17.1 | |
| ≥ 13 | 22.1 | 27.5 | |
| Income per capita (US dollars) | < 0.001 | ||
| < 5000 | 36.2 | 18.6 | |
| 5000–14,999 | 46.5 | 65.8 | |
| ≥ 15,000 | 17.4 | 15.6 | |
| Median UIC (μg/L) | 188.5 (181.8–195.3) | 128.5 (124.0–136.0) | < 0.001 |
| Metabolism syndrome | 17.6 | 22.8 | 0.001 |
| Hyperuricemia | 11.0 | 10.3 | 0.548 |
| Smoking cigarettes | 44.5 | 46.2 | 0.395 |