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Table 1 Twin pair characteristics

From: Longitudinal, genome-scale analysis of DNA methylation in twins from birth to 18 months of age reveals rapid epigenetic change in early life and pair-specific effects of discordance

Twin pair ID number Zygositya Chorionicityb Twin 1 sex Twin 2 sex Gestational age Birth weight discordance (%)c Samples removed after QCd
1016 MZ DC M M 37 5.4 T2_18
1022 MZ MC M M 38 12.4 T1_18, T2 _18
1024 MZ DC F F 37 12.1 T2_B
1032 DZ DC F F 37 43.3 T1_18
1035e MZ MC F F 35 30.8  
1042 DZ DC M M 30 19.8  
1046 MZ DC M M 37 6.2  
1057 DZ DC M M 37 13.3  
1058 MZ DC M M 36 22.0  
1072 DZ DC F F 37 14.5  
1107 MZ MC F F 33 8.1 T1_18
1126 MZ MC F F 32 27.3 T2_18
2034 MZ DC F F 36 3.6  
3006 DZ DC M M 37 3.6  
3014 MZ MC M M 36 18.0  
  1. aMZ, monozygotic; DZ, dizygotic. bMC, monochorionic; DC, dichorionic. c[(Weight of heaviest twin - Weight of lightest twin)/Weight of heaviest twin] × 100. dT1/T2, twin 1/2; B, birth sample; 18, 18 months sample. eTwin-to-twin transfusion syndrome.