Skip to main content

Table 3 Characteristics of the in vitro fertilization (IVF) and non-IVF premature newborns with gestational age <32 weeks

From: The effect of IVF pregnancies on mortality and morbidity in tertiary unit

Variable IVF group n =40 Non-IVF group n =113 p value
*Maternal agec 28 (20–43) 29 (20–36) 0.001
*Gravidity 1 1 (1–6) 0.024
**Preeclampsia 9 (23) 28 (25) 0.7
Male/female (n) 22/18 62/51 0.9
**Multiple birth    
Twins 20 (50) 13 (12) <0.001
Triplets 10 (25) 3 (2.7) <0.001
*Gestational age (weeks) 28 (22–31) 29 (23–31) 0.034
*Birth weight (grams) 1180 (550–2350) 1100 (380–2370) 0.2
**Intrauterine growth retardation 1 (3) 16 (14) 0.028
**Cesarean section 32 (80) 85 (75) 0.54
**Preterm premature rupture of fetal membranes 13 (33) 23 (20) 0.12
**Out born newborn 2 (5) 13 (12) 0.23
**No or prenatal maternal management 40 (100) 106 (94) 0.27
**Antenatal steroid 28 (70) 74 (36) 0.002
**Doppler 3 (8) 21 (19) 0.24
**Resuscitation 10 (25) 29 (26) 0.8
**Oligohydramnios 9 (23) 24 (21) 0.86
**Congenital anomaly, non-life-threatening/ life-threatening 1/0 (3) 6/0 (5) 0.67
**Congenital heart anomaly 4 (10) 6 (5) 0.32
*1-minute Apgar score (0–10) (1–9) 0.6
*5-minute Apgar score (0–10) (1–9) 0.9
**Respiratory distress syndrome 33 (83) 84 (79) 0.05
**Bronchopulmonary dysplasia 16 (40) 28 (25) 0.068
**ROP    
Grade 1 6 (15) 5 (4) 0.1
Grade 2 2 (5) 6 (5)  
Grade 3 2 (5) 3 (3)  
**Intraventricular hemorrhage    
Grade 1 11(28) 21 (19) <0.001
Grade 2 7 (18) 7 (6)  
Grade 3 4 (10) 3 (3)  
Grade 4 3 (8) 3 (3)  
  1. * Results are presented as median (minimum-maximum).
  2. ** Results are presented as number and percentage, n (%).
  3. p < 0.05 is statistically significant. *Mann–Whitney U test or **chi-squared test was used.