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Maternal characteristics among all live births during study period
| Percentage(absolute numbers) of total live births | |||
|---|---|---|---|
| 2001 | 2006 | 2011 | |
| Multiparous (parity ≥1) | 56.80 (3,163) | 47.91 (3,692) | 47.05 (3,160) |
| Preterm | 14.09 (785) | 15.84 (1,221) | 18.44 (1,239) |
| Age ≥35 | 2.26 (126) | 2.37 (183) | 3.40 (229) |
| Multiple gestation | 1.41 (79) | 1.69 (131) | 2.06 (139) |
