Mandy B. Belfort, M. D. , M. P. H. , of Boston Children's Hospital, and colleagues examined the relationshipsofbreastfeeding duration and exclusivity with child cognition at ages 3 and7years.
波士顿儿童医院的贝尔福特博士与她的同事研究了母乳喂养时间分别与3岁、7岁时儿童认知能力的关系。
Results Compared with non-only-child recruits group, the only-child recruits group had higher N score(P<0.01)and lower L score(P<0.05)of EPQ.
结果与非独生子女组相比，独生子女组EPQ中的N量表分明显偏高（P<0.01），而L量表分偏低（P<0.05）；
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