Childhood mental ability in relation to cause-specific accidents in adulthood: the 1970 British Cohort Study.
BACKGROUND
Few data link childhood mental ability (IQ) with risk of accidents, and most published studies have methodological limitations.


OBJECTIVE
To examine the relationship between scores from a battery of mental ability tests taken in childhood, and self-reported accidents between the ages of 16 and 30 years.


METHODS
In the British Cohort study, a sample of 8172 cohort members born in Great Britain in 1970 had complete data for IQ score assessed at 10 years of age and accident data self-reported at age 30 years.


RESULTS
The relationship between childhood IQ score and later risk of accident was complex, differing according to sex and the type of accident under consideration. Women with higher childhood IQ were more likely than those with lower scores to report having had an accident(s) while at work, in a vehicle, engaging in sports, and in unspecified circumstances. Adjustment for markers of socioeconomic position weakened or eliminated some of these relations, but higher childhood IQ remained associated with increased risk of sporting and unspecified accidents. Men with higher childhood IQ scores were less likely than those with lower scores to report accidents at work, but more likely to report accidents at home, playing sports or in unspecified circumstances. After adjustment for socioeconomic circumstances, higher childhood IQ in men remained associated with an increased risk of accidents at home or in unspecified circumstances.


CONCLUSIONS
The relationship between childhood mental ability and accidents in adulthood is complex. As in other studies, socioeconomic position has an inconsistent relationship with non-fatal accident type.
Batty
G D
GD
MRC Social & Public Health Sciences Unit, University of Glasgow, 4 Lilybank Gardens, Glasgow, UK. david-b@msoc.mrc.gla.ac.uk
Deary
I J
IJ
Schoon
I
I
Gale
C R
CR
D000059:Accidents / Q000523:psychology* / Q000706:statistics & numerical data; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003071:Cognition / Q000502:physiology*; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007360:Intelligence / Q000502:physiology*; D008137:Longitudinal Studies; D008297:Male; D012307:Risk Factors; D012959:Socioeconomic Factors; D006113:United Kingdom