Table 4. Births and risk of death in very low birth weight infants by level of care and regions in Korea.
| Year | Characteristic | Levela | Regionb | Total | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 1 | 2 | 3 | 4 | 5 | |||
| 2009 | Hospital | 47 (53.4) | 29 (33.0) | 12 (13.6) | 30 (33.7) | 21 (23.6) | 9 (10.1) | 21 (23.6) | 8 (9.0) | 89 |
| Birth | 510 (19.7) | 1,310 (50.7) | 764 (29.6) | 1,054 (40.8) | 461 (17.8) | 286 (11.1) | 565 (21.9) | 197 (7.6) | 2,563 | |
| Mortality rate | 16.3 | 16.6 | 9.0 | 10.9 | 13.2 | 19.9 | 16.3 | 21.3 | 14.3 | |
| OR (95% CI) | 2.0 (1.4–2.8) | 2.0 (1.5–2.7) | 1.0 (Ref.) | 1.0 (Ref.) | 1.3 (0.9–1.7) | 2.0 (1.4–2.8) | 1.6 (1.2–2.1) | 2.2 (1.5–3.3) | ||
| 2015 | Hospital | 33 (38.8) | 30 (35.3) | 22 (25.9) | 28 (32.2) | 21 (24.1) | 10 (11.5) | 19 (21.8) | 8 (9.2) | 86 |
| Birth | 399 (13.3) | 1,040 (34.8) | 1,549 (51.2) | 994 (33.2) | 679 (22.7) | 327 (10.9) | 771 (25.8) | 219 (7.3) | 2,990 | |
| Mortality rate | 9.5 | 12.5 | 10.8 | 10.7 | 11.9 | 10.4 | 12.8 | 7.3 | 11.2 | |
| OR (95% CI) | 0.9 (0.6–1.3) | 1.5 (1.2–1.9) | 1.0 (Ref.) | 1.0 (Ref.) | 1.3 (0.9–1.7) | 1.1 (0.7–1.6) | 1.4 (1.0–1.8) | 0.7 (0.4–1.3) | ||
Values are presented as number (%).
OR = odds ratio, CI = confidence interval.
aSee Method for definition; b1: Seoul, 2: Incheon and Gyeonggi province, 3: Chungcheong and Gangwon province, 4: Gyeongsang province, and 5: Jeolla province.