Table 2.
The survival rate of extremely low birth weight (ELBW) infants at discharge from 2008 to 2017.
| Discharged year | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | p-value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ELBW infants, n | 91 | 102 | 114 | 237 | 210 | 244 | 308 | 340 | 463 | 466 | – |
| BW (grams), median (IQR) | 900 (800, 965) | 895 (785, 945) | 893 (800, 950) | 900 (800, 945) | 900 (824, 960) | 917 (821, 965) | 900 (800, 950) | 900 (800, 959) | 880 (790, 950) | 870 (780, 940) | – |
| Survival, n (%) | 38 (41.76) | 48 (47.06) | 56 (49.12) | 110 (46.41) | 110 (52.38) | 136 (55.74) | 164 (53.25) | 195 (57.35) | 273 (58.96) | 289 (62.02) | < 0.001* |
| Died under active treatment, n (%) | 13 (14.29) | 14 (13.73) | 17 (14.91) | 39 (16.45) | 23 (10.95) | 27 (11.07) | 57 (18.51) | 61 (17.94) | 77 (16.63) | 60 (12.88) | – |
| Died after treatment withdrawal, n (%) | 40 (43.96) | 40 (39.22) | 41 (35.96) | 88 (37.13) | 77 (36.67) | 81 (33.20) | 87 (28.25) | 84 (24.71) | 113 (24.41) | 117 (25.11) | – |
*Chi-square test linear-by-linear association. ELBW: Extremely low birth weight; IQR: Interquartile range.