Descriptive data for variables included in the analyses.

MZ = monozygotic; SD = standard deviation; BW = birth weight; WM = working memory; IQ = intellectual quotient; *: average methylation fraction of cg07075026 and cg20966754 (IGF2BP1) (see Materials and methods: b. CpG region selection).Descriptive data for variables included in the analyses.MZ（monozygotic，单合子）；SD（standard deviation，标准差）；BW（birth weight，出生体重）；WM（working memory，工作记忆）；IQ（intellectual quotient，智商）；符号*代表cg07075026与cg20966754（IGF2BP1）的平均甲基化分数（详见材料与方法：b. CpG区域选择）。本分析所纳入变量的描述性数据。