This study investigated the association between parental age at birth and attention-deficit/hyperactivity disorder (ADHD) symptoms in their children. A total of 30,552 children aged 6–12 years participated in the study. ADHD symptoms were rated using the Korean version of the ADHD Rating Scale (K-ARS) by parents. K-ARS scores and odds ratio (OR) for children with high-risk ADHD presented a U-shape curve depending on the age of both parents at birth. The total K-ARS scores and OR for high-risk ADHD were highest in children of fathers and mothers belonging to the youngest age group (aged ≤20) (K-ARS = 12.33, OR = 2.89 vs K-ARS = 10.98, OR = 2.63) and second highest in children whose father's or mother's age at birth was the oldest (K-ARS = 9.63, OR = 1.65 vs K-ARS = 9.95, OR = 1.95). Our study identified that both spectrums of age—young and old of either parent—were associated with ADHD in children. These are new findings considering that old age of parents as the correlates of offspring ADHD is the inconsistent finding with previous studies and warrant future studies in other cultures that include more detailed information on ADHD symptoms of children and their parents are needed to confirm the present findings.

这项研究调查了父母的出生年龄与孩子的注意力缺陷/多动症（ADHD）症状之间的关系。共有30552名6-12岁的儿童参加了这项研究。父母使用韩语版多动症评分量表（K-ARS）对多动症症状进行评分。高危多动症儿童的K-ARS得分和比值比（OR）呈U型曲线，具体取决于父母双方出生时的年龄。K-ARS总分和高危ADHD的OR在最高年龄组（≤20岁）的父母子女中最高（K-ARS = 12.33，OR = 2.89 vs K-ARS = 10.98，OR = 2.63），而父亲或母亲出生时年龄最大的孩子第二高（K-ARS = 9.63，OR = 1.65 vs K-ARS = 9.95，OR = 1.95）。我们的研究表明，两个年龄段（父母双方的年龄都在）与儿童多动症有关。这些新发现是考虑到父母的高龄与后代多动症的相关性与以前的研究不一致，并且需要在其他文化中进行进一步的研究，其中包括有关儿童多动症症状的更详细信息，并且需要父母的父母来确认当前的发现。