In terms of pubertal stage, the contribution from genes was estimated to be zero using continuous approach and 63% of the variance using categorical approach for girls;

• 就女生而言，若将青春期分期当做连续变项进行分析，发现没有线性遗传因子的效应，若当做类别变项则有63%25的变异是来自于现性遗传因子；