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Childhood cognitive ability and self-harm and suicide in later life.


ABSTRACT:

Background

Self-harm and suicide remain prevalent in later life. For younger adults, higher early-life cognitive ability appears to predict lower self-harm and suicide risk. Comparatively little is known about these associations among middle-aged and older adults.

Methods

This study examined the association between childhood (age 11) cognitive ability and self-harm and suicide risk among a Scotland-wide cohort (N = 53037), using hospital admission and mortality records to follow individuals from age 34 to 85. Multistate models examined the association between childhood cognitive ability and transitions between unaffected, self-harm, and then suicide or non-suicide death.

Results

After adjusting for childhood and adulthood socioeconomic conditions, higher childhood cognitive ability was significantly associated with reduced risk of self-harm among both males (451 events; HR = 0.90, 95% CI [0.82, 0.99]) and females (516 events; HR = 0.89, 95% CI [0.81, 0.98]). Childhood cognitive ability was not significantly associated with suicide risk among those with (Male: 16 events, HR = 1.05, 95% CI [0.61, 1.80]; Female: 13 events, HR = 1.08, 95% CI [0.55, 2.15]) or without self-harm events (Male: 118 events, HR = 1.17, 95% CI [0.84, 1.63]; Female: 31 events, HR = 1.30, 95% CI [0.70, 2.41]).

Limitations

The study only includes self-harm events that result in a hospital admission and does not account for self-harm prior to follow-up.

Conclusions

This extends work on cognitive ability and mental health, demonstrating that these associations can span the life course and into middle and older age.

SUBMITTER: Iveson MH 

PROVIDER: S-EPMC10821139 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Publications

Childhood cognitive ability and self-harm and suicide in later life.

Iveson Matthew H MH   Ball Emily L EL   Whalley Heather C HC   Deary Ian J IJ   Cox Simon R SR   Batty G David GD   John Ann A   McIntosh Andrew M AM  

SSM - population health 20231229


<h4>Background</h4>Self-harm and suicide remain prevalent in later life. For younger adults, higher early-life cognitive ability appears to predict lower self-harm and suicide risk. Comparatively little is known about these associations among middle-aged and older adults.<h4>Methods</h4>This study examined the association between childhood (age 11) cognitive ability and self-harm and suicide risk among a Scotland-wide cohort (N = 53037), using hospital admission and mortality records to follow i  ...[more]

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