Figure 4

Relation of inter-twin differences for birth weight and IGF2 dmr0 SN1 methylation; Spearman’s ρ = 0.51 ( P < 0.05). Filled circles, concordant pairs; open circles, discordant pairs. Note that due to the definition of discordance (difference in birth weight ≥10% and/or birth length ≥1.0 SDS) some pairs with birth weight differences <1.0 SDS were classified as discordant. SDS, standard deviation score.