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Distribution of deliveries by year during the period of the study.
| Year | Deliveries per year | 10–16 year | 17–19 year | Total | |||
|---|---|---|---|---|---|---|---|
| N | (%) | N | (%) | N | (%) | ||
| 2003 | 18554 | 544 | (2.93) | 2254 | (12.15) | 2798 | (15.08) |
| 2004 | 19687 | 612 | (3.11) | 2239 | (11.37) | 2851 | (14.48) |
| 2005 | 19546 | 473 | (2.42) | 2100 | (10.74) | 2508 | (12.83) |
| 2003–2005 | 57787 | 1629 | (2.82) | 6593 | (11.41) | 8222 | (14.23) |
Chi2 for trend: 30.2 and P = .0000; N : Number of women who gave birth; %: Percentage.s
