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Objectives <p>Although cross-sectional data indicated positive association between hyperactivity and inattention problems and irregular bedtime, longitudinal studies on this topic are scarce leading to no clear inference regarding their directional relationship. Thus, using a prospective birth cohort, we examined the longitudinal relationship between hyperactivity/inattention problems and bedtime irregularity among children aged 5–11 years.</p> Study design <p>We made use of a nationally representative British birth cohort (<i>N</i> = 15430). Parents reported their children’s hyperactivity/inattention symptoms and bedtime irregularity when the children were aged 5, 7 and 11 years. Data were analyzed using the cross-lagged autoregressive model.</p> Results <p>Hyperactivity/inattention symptoms (<i>β</i>s = 0.74, <i>p</i>s &lt; 0.001) and bedtime irregularity (0.35 ≤ <i>β</i>s ≤ 0.45, <i>p</i>s &lt; 0.001) remained stable across the 6-year period. Hyperactivity/inattention symptoms and bedtime irregularity consistently predicted each other over time (0.02 ≤ <i>β</i>s ≤ 0.05, <i>ps &lt; .</i>05).</p> Conclusions <p>Our findings supported a small, yet statistically significant bidirectional relationship between hyperactivity/inattention symptoms and bedtime irregularity during childhood. Findings are consistent with the possibility that regularising bedtime may be associated with improvements on children’s hyperactivity/inattention behaviour. Targeting both hyperactivity/inattention symptoms and bedtime irregularity might be a better approach to optimise overall functioning.</p>

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The bidirectional relationship between children’s bedtime irregularity & hyperactivity/inattention symptoms: a prospective cohort study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月9日

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  • Kin Ho Alan Li,
  • Mark Lawrence Wong

摘要

Objectives

Although cross-sectional data indicated positive association between hyperactivity and inattention problems and irregular bedtime, longitudinal studies on this topic are scarce leading to no clear inference regarding their directional relationship. Thus, using a prospective birth cohort, we examined the longitudinal relationship between hyperactivity/inattention problems and bedtime irregularity among children aged 5–11 years.

Study design

We made use of a nationally representative British birth cohort (N = 15430). Parents reported their children’s hyperactivity/inattention symptoms and bedtime irregularity when the children were aged 5, 7 and 11 years. Data were analyzed using the cross-lagged autoregressive model.

Results

Hyperactivity/inattention symptoms (βs = 0.74, ps < 0.001) and bedtime irregularity (0.35 ≤ βs ≤ 0.45, ps < 0.001) remained stable across the 6-year period. Hyperactivity/inattention symptoms and bedtime irregularity consistently predicted each other over time (0.02 ≤ βs ≤ 0.05, ps < .05).

Conclusions

Our findings supported a small, yet statistically significant bidirectional relationship between hyperactivity/inattention symptoms and bedtime irregularity during childhood. Findings are consistent with the possibility that regularising bedtime may be associated with improvements on children’s hyperactivity/inattention behaviour. Targeting both hyperactivity/inattention symptoms and bedtime irregularity might be a better approach to optimise overall functioning.