观察单位

方法假设各变量相互独立，观察单位某变量取值是随机的，则其秩的分布为均匀分布，秩和的分布是m个独立同分布变量之秩的和。

Methods Suppose there are m independent variables and their rank is uniform distribution so that rank sum of m variables is the sum of m independent identical distributions .

以病人为观察单位，多元线性回归分析结果显示，年龄、受教育程度、自我感觉健康状况和科室对满意度有影响，但仅可以解释总变异的8.1%。

Taking the patient as study unit , the multiple linear regression revealed that patients ' age , education level , self-report health status and department influence their satisfaction with nursing care , but only explained 8.1 % of the variance .

设计：病例-对照观察。单位：首都医科大学宣武医院心内科。

DESIGN : Case control observation .

方法对27例急性白血病化疗后骨髓涂片首次完全缓解（CR）时的骨髓切片进行同步观察，计数单位面积内原始细胞簇及原始细胞总数。

Methods We studied 27 cases of AL by observing their bone marrow ( BM ) biopsy sections and simultaneously , their BM smears from which the first complete remission ( CR ) were determined after chemotherapy .

为了验证转基因烟草中表达的外壳蛋白（CP）能够重新包被侵入的烟草花叶病毒（TMV）的假设，利用抗原表位标记的方法观察CP亚单位在病毒5′端的交换。

To test the hypothesis and prediction that transgenic coat protein ( CP ) could recoat the uncoated virions , an epitope tag approach was exploited to look for the exchange of coat protein subunits at the 5 ′ end of the challenged virus .

设计：以阅读障碍患儿为研究对象，正常儿童为对照组的观察对比研究。单位：一所大学医院的核医学科及精神卫生研究所。

DESIGN : Comparative observation study with RD children as subjects and normal children as control SETTING : Nuclear medicine and psychological health institute of a university .