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Table 1 Clinical characteristics

From: Long-term follow-up of mental health, health-related quality of life and associations with motor skills in young adults born preterm with very low birth weight

  VLBW (n = 35) Control (n = 37)
  Mean (SD) Mean (SD)
Birth weight (g) 1198 (254) 3608 (361)
Gestational age (weeks) 29.0 (2.7) 39.4 (1.1)
Birth head circumference (cm)a 26.9 (2.4) 35.2 (1.2)
Apgar score after 1 minb 6.8 (1.9) 8.9 (0.5)
Apgar score after 5 minc 8.4 (1.7) 9.7 (1.5)
Maternal age at birth (years) 28.4 (5.6) 30.1 (4.5)
Parental SES (at 14 years)c 3.5 (1.1) 3.7 (1.1)
Age at current follow-up 22.5 (0.7) 22.7 (0.6)
  Median (Range) Median (Range)
Stay in NICU (days)d 63 (25–386) 0 (0–9)
Mechanical ventilation (days)d 1 (0–63) -  
  n (%) n (%)
Intraventricular haemorrhaged 3 (9) -  
Grade I-II 2    
Grade IV 1    
Cerebral palsy 4 (11) 0  
GMFCS level I-II 3    
GMFCS level IV 1    
Low IQest 8 (23)e 1 (3)
  1. aData missing for eight VLBW and three control participants
  2. bData missing for three control participants
  3. cData missing for two control participants
  4. dData missing for one VLBW participant
  5. eTwo VLBW participants with low IQest had cerebral palsy
  6. VLBW = very low birth weight, SES = socioeconomic status, NICU = neonatal intensive care unit, GMFCS = Gross Motor Function Classification System, IQ est  = estimated intelligence quotient
  7. Group differences for maternal age, SES and age at follow-up were non-significant