Hospitalisation characteristics
| Year period | Gestational age at birth | Total hospital stay in days Median (IQR) | NICU days Median (IQR) | Mechanical ventilation days Median (IQR) | Days of parenteral nutrition Median (IQR) | EBF* at hospital discharge N (%) | IUGR N (%) | EUGR at KMCP entry N (%) |
| 1993–1997 | ≤32 weeks | 27(15-40) | 12(8-20) | 4 (2–7) | No data available | No data available | No data available | No data available |
| 33–36 weeks | 7 (3–14) | 11(7-20) | 3 (2–4) | |||||
| ≥37 weeks | 3 (3–6) | 13 (6–21) | 2 (1–2) | |||||
| 1998–2002 | ≤32 weeks | 36(25-51) | 7 (4–16) | 4 (2–8) | ||||
| 33–36 weeks | 9 (4–15) | 6 (2–12) | 3 (2–5) | |||||
| ≥37 weeks | 5 (3–10) | 14(3-19) | 6 (1–11) | |||||
| 2003–2007 | ≤32 weeks | 30(18-44) | 7 (3–18) | 4 (2–9) | 594/1433 (42.0) | 177/1433 (12.0) | 594/1250 (48.0) | |
| 33–36 weeks | 8 (5–13) | 4 (2–7) | 2 (1–4) | 1868/2551 (73.0) | 1036/2551 (40.6) | 670/1507 (45.0) | ||
| ≥37 weeks | 5 (3–9) | 4 (2–9) | 3 (2–5) | 274/331 (83.0) | 315/331 (95.0) | – | ||
| 2008–2012 | ≤32 weeks | 32(20-48) | 10(4-20) | 3 (1–8) | 6 (0–13) | 838/2295 (37.0) | 239/2294 (10.0) | 584/2005 (29.0) |
| 33–36 weeks | 8 (4–12) | 3 (2–6) | 2 (1–5) | 0 | 3951/5883 (67.0) | 1635/5884 (28.0) | 1234/4207 (29.0) | |
| ≥37 weeks | 4 (1–7) | 2 (1–5) | 3 (1–5) | 0 | 1195/1665 (71.8) | 1530/1668 (92.0) | – | |
| 2013–2017 | ≤32 weeks | 35(23-54) | 10(4-25) | 3 (1–8) | 8 (0–15) | 1173/3165 (37.0) | 265/3165 (8.0) | 829/2749 (30.0) |
| 33–36 weeks | 7 (3–12) | 3 (1–6) | 2 (1–3) | 0 | 7085/10 698 (66.0) | 2489/10 709 (23.0) | 1886/7862 (24.0) | |
| ≥37 weeks | 3 (1–6) | 3 (1–5) | 2 (1–4) | 0 | 3506/4830 (73.0) | 4246/4839 (88.0) | – | |
| 2018–2019 | ≤32 weeks | 35(24-53) | 14(4-30) | 3 (1–10) | 10 (0–15) | 336/1000 (34.0) | 89/998 (9.0) | 203/878 (23.0) |
| 33–36 weeks | 7 (3–12) | 3 (2–7) | 1 (1–3) | 0 | 2715/4148 (66.0) | 1037/4139 (25.0) | 683/3064 (22.0) | |
| ≥37 weeks | 2 (1–5) | 3 (1–8) | 2 (1–5) | 0 | 2071/2874 (72.0) | 2429/2874 (84.5) | – | |
| 2020–2021 | ≤32 weeks | 37(25-51) | 14(5-28) | 3 (1–9) | 10(4-15) | 188/532 (35.0) | 62/536 (12.0) | 93/471 (20.0) |
| 33–36 weeks | 7 (4–13) | 4 (2–7) | 1 (1–3) | 0 | 1588/2503 (63.0) | 556/2511 (22.0) | 364/1949 (19.0) | |
| ≥37 weeks | 3 (2–7) | 4 (2–8) | 2 (1–5) | 0 | 1332/1895 (70.0) | 1571/1899 (83.0) | – |
EBF, exclusive breast feeding; EUGR, Extra Uterine Growth Restriction; NICU, Neonatal Intensive Care Unit.