large-sample randomized clinical trials 大样本随机临床试验
The study, published in The American Journal of Clinical Nutrition, has significant strengths in its prospective design, large sample and use of a well-validated dietary questionnaire.
这项研究发表于《美国临床营养学杂志》(the American Journal of Clinical Nutrition)。 该研究因实验安排可操作、实验参与对象数量多并使用经充分验证过的饮食问卷调查而具有显著优势。
Methods: 2060 cases of primary hepatic cancer were clinically researched by a large sample number clinical epidemiological survey program.
方法：采用大样本临床流行病学调研方案，临床调查原发性肝癌2060例。
However, this research sample size smaller, still need to multicenter, large sample, the long-term clinical observation confirmed this conclusion.
但是本研讨样本量较小，尚需多中心、大样本、临时的临床察看证明本结论。
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