From: Trends in gestational age and birth weight in Chile, 1991–2008. A descriptive epidemiological study
Periods | Total births | GAa < 22 | % | BWb < 500 | % | Errors | % | GA missing | % | GA ≥44 | % | BW missing | % |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
values | |||||||||||||
1991-1995 | 1 379 194 | 124 | 0.01 | 211 | 0.02 | 29 205 | 2.12 | 5 471 | 0.40 | 164 | 0.01 | 4441 | 0.32 |
1996-2000 | 1 281 424 | 99 | 0.01 | 198 | 0.02 | 25 104 | 1.96 | 2 799 | 0.22 | 111 | 0.01 | 2006 | 0.16 |
2001-2008 | 1 899 299 | 525 | 0.03 | 960 | 0.05 | 24 720 | 1.3 | 2 482 | 0.13 | 544 | 0.03 | 2310 | 0.12 |
Total | 4 559 917 | 748 | 0.02 | 1369 | 0.03 | 79 029 | 1.73 | 10 752 | 0.23 | 819 | 0.02 | 8757 | 0.19 |