Research Article
Mortality in Extremely Low-Birth-Weight Neonates in México City (1985–2009)
Table 2
Early-neonatal, neonatal, and 120-day mortality in ELBW neonates by 5-year periods: 1985–2008.
| | Birth weight | 1985–1989 # dead/# total (%) | 1990–1994 # dead/# total (%) | 1995–1999 # dead/# total (%) | 2000–2004 # dead/# total (%) | 2005–2009 # dead/# total (%) | -value |
| | Early-neonatal mortality (
≤
8 days) | | | | | | | | 751–1000 g | 11/23§ (47.0%) | 6/14 (42.9%) | 2/13 (15.4%) | 2/7§ (28.5%) | 2/28 (7.1%) | .0008 | | 500–750 g | 15/18 (83.3%) | 7/8 (87.5%) | 2/3 (66.7%) | 5/10§ (50.0%) | 9/23§ (39.1%) | .0004 | | <500 g | 1/1 (100%) | — | — | 1/1 (100%) | 3/5 (60.0%) | — | | Total | 27 (62.8%) | 13 (59.1%) | 4 (25%) | 7 (35%) | 14 (24.5%) |
<
.0001 |
| | Neonatal mortality (
≤
28 days) | | | | | | | | 751–1000 g | 12/23§ (52.1%) | 7/14 (50.0%) | 5/13 (38.5%) | 3/7§ (42.8%) | 3/28 (10.7%) | .001 | | 500–750 g | 16/18 (88.9%) | 7/8 (87.5%) | 3/3 (100%) | 6/10§ (60.0%) | 13/23§ (56.5%) | .005 | | <500 g | 1/1 (100%) | — | — | 1/1 (100%) | 3/5 (60.0%) | — | | Total | 29 (67.4%) | 14 (63.6%) | 8 (50%) | 9 (45%) | 19 (33.3%) | .0003 |
| | 120-day mortality | | | | | | | | 751–1000 g | 15/23§ (65.2%) | 8/14 (57.1%) | 6/13 (46.2%) | 3/7§ (42.8%) | 4/27§ (14.3%) | .0002 | | 500–750 g | 16/18 (88.9%) | 7/8 (87.5%) | 3/3 (100%) | 6/10§ (60.0%) | 14/23§ (60.8%) | .01 | | <500 g | 1/1 (100%) | — | — | 1/1 (100%) | 4/5 (80.0%) | — | | Total | 32 (74.4%) | 15 (68.2%) | 9 (56.3%) | 9 (45%) | 22 (38%) |
<
.0001 |
|
|
Chi-square linear-by-linear association tests. § Includes transferred patients.
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