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Childhood IQ, social class, deprivation, and their relationships with mortality and morbidity risk in later life: prospective observational study linking the Scottish Mental Survey 1932 and the Midspan studies.
- Source :
-
Psychosomatic medicine [Psychosom Med] 2003 Sep-Oct; Vol. 65 (5), pp. 877-83. - Publication Year :
- 2003
-
Abstract
- Objective: To investigate how childhood mental ability (IQ) is related to mortality and morbidity risk, when socioeconomic factors are also considered.<br />Methods: Participants were from the Midspan studies conducted on adults in the 1970s; 938 Midspan participants were successfully matched with the Scottish Mental Survey 1932 in which children born in 1921 and attending Scottish schools on June 1, 1932, took a cognitive ability test. Mortality, hospital admissions, and cancer incidence in the 25 years after the Midspan screening were investigated in relation to childhood IQ, social class, and deprivation.<br />Results: The risk of dying in 25 years was 17% higher for each standard deviation disadvantage in childhood IQ. Adjustment for social class and deprivation category accounted for some, but not all, of this higher risk, reducing it to 12%. Analysis by IQ quartile showed a substantial increased risk of death for the lowest-scoring quarter only. Structural equation modeling indicated that the effect of childhood IQ on mortality was partly indirectly influenced by social factors. Cause-specific mortality or hospital admission showed that lower IQ was associated with higher risks for all cardiovascular disease and coronary heart disease. Cause-specific mortality or cancer incidence risk was higher with decreasing IQ for lung cancer.<br />Conclusions: Lower childhood IQ was related to higher mortality risk and some specific causes of death or morbidity. Childhood IQ may be considered as a marker for risk of death or illness in later life in similar and complementary ways to social class or deprivation category.
- Subjects :
- Adult
Cardiovascular Diseases mortality
Cause of Death
Child
Cognition
Cohort Studies
Female
Follow-Up Studies
Health Surveys
Hospitalization statistics & numerical data
Humans
Male
Neoplasms epidemiology
Physical Examination
Proportional Hazards Models
Respiration Disorders mortality
Risk
Scotland epidemiology
Surveys and Questionnaires
Intelligence
Morbidity
Mortality
Psychosocial Deprivation
Social Class
Subjects
Details
- Language :
- English
- ISSN :
- 1534-7796
- Volume :
- 65
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Psychosomatic medicine
- Publication Type :
- Academic Journal
- Accession number :
- 14508035
- Full Text :
- https://doi.org/10.1097/01.psy.0000088584.82822.86