Table 2.
The pooled prevalence of DES in mainland China with different populations and regions.
| Variable | Number of articles | Case/total | Pooled estimate [95% CI] (%) | Heterogeneity I 2 (%)∗ | Q value | OR [95% CI] | P value |
|---|---|---|---|---|---|---|---|
| General population | 12 | 5579/41594 | 17.0 [9.9–27.4] | 49.9 | 0.99 | ||
| Gender | |||||||
| Male | 9 | 1619/12025 | 15.6 [8.3–27.6] | 49.8 | 0.99 | 1.00 | |
| Female | 9 | 2278/12784 | 21.6 [14.0–31.9] | 49.8 | 0.99 | 1.41 [1.31–1.52] | <0.001 |
| Rural/urban | |||||||
| Rural | 5 | 2485/9571 | 21.3 [9.2–41.9] | 49.9 | 0.99 | 1.00 | |
| Urban | 7 | 2499/19425 | 15.3 [10.6–21.8] | 49.7 | 0.99 | 1.06 [0.97–1.17] | 0.205 |
| Northern/Southern | |||||||
| Northern | 6 | 3338/24151 | 17.9 [6.6–40.0] | 49.7 | 0.99 | 1.97 [1.78–2.04] | <0.001 |
| Southern | 6 | 2241/17443 | 16.1 [10.2–24.3] | 49.8 | 0.98 | 1.00 | |
| Age | |||||||
| ≤60 yrs | 12 | 2294/14996 | 14.2 [8.7–22.3] | 49.8 | 0.99 | 1.00 | |
| >60 yrs | 12 | 1856/6904 | 34.4 [23.7–47.1] | 49.6 | 0.98 | 3.49 [3.12–3.84] | <0.001 |
| Area | |||||||
| Eastern | 7 | 1753/13476 | 12.8 [7.3–21.4] | 49.7 | 0.98 | 2.62 [2.32–2.95] | <0.001 |
| Central | 2 | 773/13386 | 10.3 [2.2–37.1] | 49.8 | 0.99 | 1.00 | |
| Western | 3 | 3053/14732 | 31.3 [10.1–65.0] | 49.8 | 0.99 | 1.38 [3.39–11.47] | <0.001 |
CI: confidence interval. ORs: odds ratios. * P < 0.001.