Observational study on the extra - floral nectary of cherry and peach 櫻桃和桃花外蜜腺的觀察研究
Analysis of hospital data by statistical methods for observational studies 觀察性研究方法與醫(yī)院資料的統(tǒng)計分析
Observational study of fosinopril on treatment of 46 essential hypertensives 福辛普利治療原發(fā)性高血壓46例臨床療效觀察
Observational study of wind fields , temperature fields over beijing area in summer and winter 北京區(qū)域夏冬季風場溫度場的觀測研究
An observational study on the vertical distribution and synoptic variation of ozone in the arctic 北極臭氧垂直分布和天氣尺度變化的觀測研究
Most importantly , observational studies cannot distinguish indicators of risk from causal factors 最為重要的是觀察性研究無法區(qū)分風險指標和偶然因素。
An observational study on curative effects of shuangligan and glycine in rats with severe acute pancreatitis 雙利肝和甘氨酸對重癥急性胰腺炎大鼠療效的觀察
Conclusions : selenium concentrations were inversely associated with coronary heart disease risk in observational studies 結論:觀察性研究中硒濃度與冠心病危險度呈負相關。
There are multiple possible reasons for discrepant results between observational studies and large randomized trials 導致觀察性研究和大規(guī)模隨機臨床試驗結果之間不一致的可能原因有多種。
We analyzed data from the program to improve care in acute renal disease ( picard ) , a multi - center observational study of arf 我們分析了來自改善急性腎臟疾病照護計劃( picard ) ? ?一個arf多中心觀察研究的數(shù)據(jù)。
In epidemiology and statistics, an observational study draws inferences about the possible effect of a treatment on subjects, where the assignment of subjects into a treated group versus a control group is outside the control of the investigator.Porta M (editor).