| |
Singletons
|
Twins
|
|---|
| |
Open vitrification (n = 30)
|
Closed vitrification (n = 60)
|
P value
|
Open vitrification (n = 11)
|
Closed vitrification (n = 10)
|
P value
|
|---|
|
Gestational age (wks)
|
38.3 ± 1.3
|
37.9 ± 1.5
|
0.175
|
37.2 ± 1.4
|
37.4 ± 1.5
|
0.844
|
|
GA < 37 weeks
|
2/30 (6.7)
|
9/60 (15.0)
|
0.426
|
4/11 (36.4)
|
4/10 (40)
|
1.000
|
|
GA ≥ 42 weeks
|
1/30 (3.3)
|
2/60 (3.3)
|
1.000
|
0
|
0
| |
|
Birth weight (g)
|
3248 ± 408
|
3163 ± 481
|
0.410
|
2800 ± 380
|
2598 ± 364
|
0.091
|
|
<2500 g
|
1/30 (3.3)
|
5/60 (8.3)
|
0.654
|
3/11 (27.3)
|
4/10 (40)
|
0.659
|
|
≥4000 g
|
3/30 (10.0)
|
7/60 (11.7)
|
0.813
|
0
|
0
| |
|
Birth length (cm)
|
49.7 ± 1.6
|
50.4 ± 1.3
|
0.086
|
48.8 ± 1.6
|
48.9 ± 1.7
|
0.858
|
- Values are mean ± SD or n/total (%).
