摘要
目的了解儿童期智商与成年期素食主义的关系。设计前瞻性队列研究,用心理测验方法评估10岁时的智商(IQ),用自我报告形式调查30岁时是否素食主义者。地点英国。对象参与1970年英国国家出生队列研究的8170名30岁的男性与女性。主要评估指标自我报告素食主义和节食方法。结果 366人(4.5%)报告是素食者,其中123人(33.6%)不忌鱼或鸡肉。素食者多为女性、社会阶层较高者(儿童时代和现在)及受教育程度与职业地位较高者,虽然这些社会经济优势并未从其收入中反映出来。10岁时智商越高,30岁时成为素食者的可能性越大,儿童智商分数增加一个标准差的比数比(OR)为1.38,95%可信区间(CI)1.24～1.53。校正社会阶层(儿童时代与现在)、学历与职业水平和性别因素后,儿童期智商仍然是成年期成为素食者的一个预测因子(OR 值1.20,95% CI 1.06～1.36),具有显著的统计学意义。排除那些不忌鱼或鸡肉的素食者后,并未改变这一结论。结论儿童时期智商分数越高,成年期成为素食者的可能性越大。
Objectives To examine the relation between IQ in childhood and vegetarianism in adulthood.
Design Prospective cohort study in which IQ was assessed by tests of mental ability at age 10 years and vegetarianism by self-report at age 30 years.
Setting Great Britain.
Participants 8170 men and women aged 30 years participating in the 1970 British cohort study, a national birth cohort.
Main outcome measures Self-reported vegetarianism and type of diet followed.
Results 366 （4.5%） participants said they were vegetarian, although 123 （33.6%） admitted eating fish or chicken. Vegetarians were more hkely to be female, to be of higher social class （ beth in childhood and currently ）, and to have attained higher academic or vocational qualifications, although these socioeconomic advantages were not reflected in their income. Higher IQ at age 10 years was associated with an increased likelihood of being vegetarian at age 30 （odds ratio for one standard deviation increase in childhood IQ score 1.38, 95% confidence interval 1.24 to 1.53 ）. IQ remained a statistically significant predictor of being vegetarian as an adult after adjustment for social class （beth in childhood and currently ）, academic or vocational qualifications, and sex （1. 20, 1. 06 to 1. 36）. Exclusion of those who said they were vegetarian but ate fish or chicken had little effect on the strength of this association.
Conclusion Higher scores for IQ in childhood are associated with an increased likelihood of being a vegetarian as an adult.
出处
《英国医学杂志中文版》
2007年第4期207-209,共3页
The BMJ Chinese Edition
