共查询到20条相似文献,搜索用时 0 毫秒
1.
《Biodemography and social biology》2013,59(2):144-145
Abstract Responses from 6,642 adolescents from forty‐six high schools in the United States were analyzed in a stepwise multiple regression to determine the independent as well as the combined effects of the variables (family size, birth order, and objective social class of father) on high‐school grade point average. Family size and birth order were not important. Contrary to other research findings, social class was of some importance. However, additional variables need to be introduced to explain grade point average. 相似文献
2.
3.
ANDERSON CD 《California medicine》1954,81(5):325-327
Age need no longer be a barrier to operation in view of the expanding knowledge of the care of surgical patients. Blood volumes and blood components can be maintained with replacement therapy. Nutritional and vitamin requirements are better understood and carbohydrates, proteins and vitamins must be given in sufficient quantities to prevent further debilitation during the critical period following operation. It has been suggested that the usual pharmacological effects of drugs may not be applicable to elderly patients. The choice of anesthetic agent based on pharmacological effects on younger persons does not necessarily apply to the aged. 相似文献
4.
5.
J. A. Williams 《BMJ (Clinical research ed.)》1969,1(5637):174-175
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
J. Stavely Dick 《BMJ (Clinical research ed.)》1932,2(3754):1122-1123
19.
20.