IUFD (N=89) Live-born infants (N=266) p
<Obstetric complications>      
Preeclampsia/eclampsia 14 (15.7%) 61 (22.9%) 0.196
Chronic hypertension 6 (6.7%) 33 (12.4%) 0.199
<Informations on admission>      
Maternal age (> 40yrs) 24 (26.9%) 15 (5.6%)  <0.001
Maternal transfer 67 (75.3%) 155 (58.3%) 0.006
Onset place of symptoms: outside obstetric facilities 88 (98.9%) 205 (77.1) <0.001
Parity 1 (0-5)* 1 (0-6)* 0.262
<Final diagnoses>      
Vaginal bleeding 32 (36%) 146 (54.9%)   0.003 
Abdominal pain 41 (46.1%) 99 (37.2%)   0.176
Abnormal ultrasonographic finding 78 (87.6%) 185 (70%) 0.001
<Informations at/after delivery>      
Cesarean section 28 (100%) 228 (95.8%) 0.87
Gestational week at delivery (weeks) 32 (24-40)* 35 (24-40)* 0.0021
Birth weight (g) 1776 (517-3124)* 2063 (694-3504)* 0.018
Male 12 (42.9%) 136 (57.1%) 0.09
Blood transfusion 58 (65.2%) 72 (27.1%) <0.001
* Represents median (min-max)
Table 2: Results of the univariate analysis in terms of the difference between intrauterine fetal death (IUFD) and live-born infants.
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