|
No. of pregnancies studied
|
73 |
73 |
|
Socioeconomic status ‘highest’ parent, no. (%)
|
|
low
|
5 (6.5) |
5 (6.8) |
|
middle
|
21 (28.8) |
22 (30.1) |
|
high
|
47 (64.4) |
46 (63.0) |
|
Ethnicity mother, no. (%)
|
|
caucasian
|
65 (89.0) |
69 (94.5) |
|
mediterrean
|
7 (9.1) |
1 (1.4) |
|
asiatic
|
0 |
1 (1.4) |
|
creole
|
0 |
1 (1.4) |
|
hindustan
|
1 (1.4) |
1 (1.4) |
|
Fetal gender
|
|
Female twin pairs, no. (%)
|
35 (47.9) |
44 (60.3) |
|
Pregnancies complicated by TTTS, no. (%)
|
14 (19.2) |
|
|
Pregnancies complicated by intra-uterine co-twin death, no. (%)
|
4 (5.5) |
3 (4.1) |
|
Perinatal outcome
|
|
Infants born alive, no. (%)
|
142 |
143 |
|
Gestational age at delivery (wk), median and range
|
35+0 (25+2–39+6) |
35+2 (26+6–39+3) |
|
Birth weight of infants born alive (g),mean±SD
|
2085±644 |
2131±600 |
|
SGA (birth weight<p10), no. (%)
|
23 (16.2) |
35 (24.1) |
| Severe birth weight discordancy (≥20%) without TTTS |
28 (24.6) |
10 (13.7) |
| 5-minute Apgar score, median (range) |
9 (4–10) |
9 (5–10) |
|
Umbilical artery pH, median (range)
|
7.25 (7.00–7.48) |
7.25 (6.86–7.44) |
|
Neonatal morbidity
|
|
RDS, no. (%)
|
24 (16.9) |
16 (11.3) |
|
IVH, no. (%)
|
8 (5.6) |
5 (3.5) |
|
PVL, no. (%)
|
0 |
0 |
|
NEC, no. (%)
|
2 (1.4) |
0 |
|
Neonatal death, no. (%)
|
2 (1.3) |
1 (0.7) |
|
Long-term survivors, no. (%)
|
140 |
142 |
