Table 3.
Perinatal and background information in VLBW participants according to diagnostic status during adolescence
| Persisting/Developing diagnosis (n = 24) | Healthy/Becoming healthy (n = 30) | |
|---|---|---|
| Male n (%) | 10 (41.7) | 14 (46.7) |
| Birth weight (grams) M (SD) | 1096.25 (264.41)** | 1269.30 (159.40)** |
| z-score weight M (SD) | -0.82 (1.50) | -0.52 (1.40) |
| Gestational age (weeks) M (SD) | 28.80 (2.93) | 29.67 (2.59) |
| Head circumference (cm) M (SD) | 26.52 (2.51) | 26.64 (1.64) |
| Days before regained weight M (SD) | 16.11 (9.38) | 16.62 (7.82) |
| Days on ventilator M (SD) | 9.45 (17.52) | 2.22 (3.80) |
| Days in NICU M (SD) | 92.15 (84.59) | 58.89 (21.92) |
| Apgar 1 min M (SD) | 5.71 (2.70)** | 7.65 (1.38)** |
| Apgar 5 min M (SD) | 7.89 (2.36) | 9.04 (0.87) |
| IQ 19 years M (SD) | 80.00 (71.59)** | 93.04 (9.40)** |
| Socio-economic status M (SD) | 3.09 (1.37) | 3.37 (1.27) |
| SES class 1 n (%) | 4 (19) | 3 (10) |
| SES class 2 n (%) | 3 (14) | 4 (14) |
| SES class 3 n (%) | 6 (29) | 6 (21) |
| SES class 4 n (%) | 4 (19) | 10 (34) |
| SES class 5 n (%) | 4 (19) | 6 (21) |
| Mother’s age (years) M (SD) | 42.95 (4.59) | 43.37 (4.96) |
*p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001 (Persisting/increasing VLBW versus Healthy/decreasing VLBW). Significant results marked bold. Mann–Whitney U-test. Z-score weight: Standard deviation score of weight in relation to gestational age and gender. Abbreviations: IQ Intelligence quotient, NICU Neonatal Intensive Care Unit, SD Standard deviation, VLBW Very low birth weight (birth weight ≤ 1500)