Table 3.
Clinical characteristics and outcomes of very low birth weight infants (n=2,660)
| Variable | 2013 (n=1,000) | 2014 (n=1,660) |
|---|---|---|
| Gestational age (wk) | 291/7±26/7 | 292/7±26/7 |
| Birth weight (g) | 1,093±268 | 1,125±261 |
| Male | 504 (50.4) | 833 (50.2) |
| Post-discharge mortality | 15 (1.5) | 20 (1.2) |
| Respiratory | 5 (45.5) | 6 (35.3) |
| Underlying disease | 11 (73.3) | 17 (85.0) |
| Growth at visit | ||
| Weight | n=800 | n=1,091 |
| <50th | 465 (46.5) | 721 (66.1) |
| 50th–90th | 243 (30.4) | 337 (30.9) |
| Height | n=753 | n=993 |
| <50th | 482 (64.0) | 622 (62.6) |
| 50th–90th | 219 (29.1) | 325 (32.7) |
| Head circumference | n=632 | n=811 |
| <50th | 404 (64.0) | 516 (63.6) |
| 50th–90th | 176 (27.8) | 267 (32.9) |
| Rehospitalizationsa) | n=846 | n=1,182 |
| Respiratory | 262 (44.9) | 349 (47.5) |
| Surgery | 135 (23.2) | 168 (22.8) |
| Infection | 106 (18.2) | 106 (14.4) |
| Medical treatmenta) | n=846 | n=1,182 |
| Oxygen | 142 (16.8) | 166 (14.0) |
| Ventilator | 53 (6.3) | 60 (5.1) |
| Nasogastric tube feeding | 76 (9.0) | 100 (8.5) |
| Cerebral palsy | n=846 | n=1,182 |
| Diplegia | 28 (3.3) | 46 (3.9) |
| Hemiplegia | 4 (0.5) | 7 (0.6) |
| Quadriplegia | 24 (2.8) | 20 (1.7) |
| Unknown | 21 (2.5) | 47 (4.0) |
| Rehabilitative support | ||
| No | 512 (60.5) | 748 (63.2) |
| Yes | 318 (37.6) | 412 (34.9) |
| Language support | ||
| No | 779 (92.1) | 1081 (91.5) |
| Yes | 43 (5.1) | 68 (5.7) |
| Eye and hearing | n=846 | n=1,182 |
| Blindness | n=846 | n=1,134 |
| One-eye | 4 (0.5) | 3 (0.3) |
| Both eyes | 2 (0.2) | 3 (0.3) |
| Ophthalmologic disordersa) | 120 (14.2) | 179 (15.1) |
| Retinopathy of prematurity | 56 (41.2) | 51 (26.6) |
| Glaucoma | 0 | 3 (1.6) |
| Cataract | 2 (1.5) | 1 (0.5) |
| Strabismus | 29 (21.3) | 40 (20.8) |
| Refraction abnormality | 15 (11.0) | 11 (5.7) |
| Wearing glasses | 23 (2.7) | 19 (1.6) |
| Hearing impairmenta) | 24 (3.2) | 22 (1.9) |
| Unilateral | 10 (1.3) | 12 (1.0) |
| Bilateral | 14 (1.9) | 10 (0.8) |
| Hearing aid | 6 (0.7) | 3 (0.3) |
| Need for cochlear impairment | 1 (0.1) | 4 (0.3) |
Values are presented as mean±standard deviation or number (%).
a)
The above variable was described as multiple answers.
Modified from Youn et al. J Korean Med Sci 2018;33:e309 [21].