Table 2. Pooled prevalence and care index of early childhood caries at age 5 in mainland China during 1987–2013.
| Number of study | Sample size | Case | Pooled prevalence (%) | 95% CI (%) | |
|---|---|---|---|---|---|
| Prevalence | 76 | 121,010 | 78,009 | 66.1 | 59.0–73.4 |
| Time period | |||||
| 1987–1994 | 11 | 3,648 | 2,802 | 77.7 | 68.9–86.5 |
| 1995–1999 | 15 | 48,978 | 31,645 | 69.0 | 61.4–76.6 |
| 2000–2004 | 12 | 12,507 | 7,750 | 61.5 | 57.7–65.3 |
| 2005–2009 | 28 | 43,843 | 28,372 | 64.0 | 57.0–70.8 |
| 2010- | 14 | 12,034 | 7,440 | 58.1 | 50.2–68.0 |
| Number of study | dmft | ft | Pooled care index (%) | 95% CI (%) | |
| Care index | 29 | 293,362 | 14,821 | 4.0 | 3.0–5.1 |
| Time period | |||||
| 1987–1994 | 3 | 4,613 | 35 | 4.5 | 3.3–5.6 |
| 1995–1999 | 7 | 123,459 | 4,641 | 3.5 | 2.8–4.3 |
| 2000–2004 | 6 | 28,914 | 1,107 | 4.2 | 3.6–4.9 |
| 2005–2009 | 10 | 114,672 | 5,246 | 3.1 | 1.4–4.8 |
| 2010– | 5 | 21,704 | 3,475 | 4.9 | 3.8–5.9 |
ECC: early childhood caries; ft: number of filled teeth; dmft: number of decayed, missing and filled teeth; care index: ft/dmft%; CI: confidence interval.