From: DNA methylation changes at infertility genes in newborn twins conceived by in vitro fertilisation
Group | Total number of twins (number of complete sets) | Zygosity and chorionicitya | Sexb | Birth weight (kg): mean(sd) | Maternal age (years): mean (sd) | Maternal smoking (percentage smokers) | Ovarian stimulation | ICSI | GIFT | Frozen embryo |
---|---|---|---|---|---|---|---|---|---|---|
WBCs | ||||||||||
IVF | 40 (20) | 10 MZ MC 30 DZ DC | 18 (F) 22 (M) | 2.57 (4.77) | 36 (4) | 20% | 6 (No) 34 (Yes) | 22 (No) 18 (Yes) | - | 28 (No) 12 (Yes) |
Non-IVF | 58 (29) | 14 MZ MC 12 MZ DC 32 DZ DC | 34 (F) 24 (M) | 2.58 (3.99) | 32 (5) | 28% | 56 (No) 2 (Yes) | - | 56 (No) 2 (Yes) | - |
CBMCs | ||||||||||
IVF | 35 (16) | 9 MZ MC 1 MZ DC 25 DZ DC | 16 (F) 19 (M) | 2.50 (4.42) | 35 (5) | 23% | 1 (No) 34 (Yes) | 14 (No) 21 (Yes) | - | 24 (No) 11 (Yes) |
Non-IVF | 47 (22) | 12 MZ MC 10 MZ DC 25 DZ DC | 30 (F) 17 (M) | 2.60 (3.48) | 32 (4) | 28% | 45 (No) 2 (Yes) | - | 45 (No) 2 (Yes) | - |