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- Most importantly, observational studies cannot distinguish indicators of risk from causal factors. 最为重要的是观察性研究无法区分风险指标和偶然因素。
- Dozens of observational studies since the early 1980s have suggested that calcium affects blood pressure. 自对世纪80年代早期以来，许多的观察研究都显示钙对血压有影响。
- The authors also examined 64 observational studies of tomato or tomato product consumption and cancer risk. 作者还审查了64个观测研究番茄或番茄制品消费量和癌症的风险。
- Selenium concentrations were inversely associated with coronary heart disease risk in observational studies. 观察性研究中硒浓度与冠心病危险度呈负相关。
- Observational studies show that PFO closure resulted in migraine cessation or improvement in 80% of such patients. 观察研究表明，卵圆孔未闭（PFO）封堵术可终止偏头痛的发作或可改善80%25头痛的患者。
- A few dozen observational studies have shown a link between cancer and high consumption of grilled and well-done meats. 数十项研究表明，癌症与消费量很高的烤制全熟肉食有关。
- Pacifier use was associated with reduced duration of breast-feeding in most observational studies. 在多数观察研究中，使用安抚奶嘴与减少母乳哺喂期间有关。
- Study Design. Observational study with prospective CT analysis. 研究设计：通过前瞻性CT分析的观察研究。
- Shorterm(<3 mo) observational studies indicate undernourished children may preferentially benefit fron breakfast consumption. 短期（小于3个月）的观测研究表明营养不良的小孩可能优先得益于吃早餐。
- Even so, several observational studies and short-term experiments have suggested an association between meal skipping and poor health. 即便如此，几项观察性研究及短期试验表明，不按顿吃饭会损害健康。
- The one RCT by Casini suggests benefit from removal of fibroids but it probably should not have been pooled with the other observational studies. 尚需进行更多高质量的研究，集中探讨肌瘤大小，数目以及距离子宫内膜远近等内容，旨在明确子宫肌瘤切除术在肌壁间子宫肌瘤治疗中的价值。
- A debate over that question in a British scientific journal shows why some observational studies should be taken with a big shaker of salt. 英国一家科学期刊就这个问题展开了一场争论，从中我们可以看出某些观察性研究的结果不可轻信。
- Observational studies from Denmark,Britain,the United States,Canada and other countries have shown a decline in the male to female ratio of children during the past few decades. 丹麦、英国、美国、加拿大和其他国家的有关报道表明，在过去的数十年中，男婴和女婴的比率有所降低。
- Ries said."This is an observational study using data from a large database. 这是一项观察性的研究，使用来自一大型资料库的数据；
- Among the observational studies, pedometer users significantly increased their physical activity by 2,183 steps per day over baseline (2,000 steps is about one mile). 在观察研究中,计步器使用者极大地提高了身体活动量,每天的步行步数比基线增加2,183步(2,000步约为一英里)。
- Flavonoids can also be found in red wine. Multiple observational studies have shown that moderate alcohol consumption is associated with lower rates of cardiovascular events. 红酒中也含有类黄硷素。多重观察研究表明，适度饮酒能够降低患心血管疾病的几率。
- Such contradictions, which are not very satisfying,often emerge from observational studies shere researchers record the natural habits and health of people. 译:这种不能令人满意的矛盾往往起源于研究者观察记录人们健康状况和生活习惯时的误差.
- The two observational studies on thiazolidinediones whose results were presented at our meeting had been performed independently of the manufacturers and the FDA. 此次会议上公布结果的两项关于罗格列酮的观察性研究分别由制造商GSK和FDA实施。
- The link between smoking and cancer, for example, was seen in many observational studies, but forcing subjects to smoke for years to prove it would be untenable. 拿吸烟和肺癌之间关系的研究来说，许多观察性研究都发现了这一点，但要迫使研究对象吸烟多年来证明这一点恐怕是不可能的。
- Observational studies from Denmark, Britain, the United States, Canada and other countries have shown a decline in the male to female ratio of children during the past few decades. 丹麦、英国、美国、加拿大和其他国家的有关报道表明，在过去的数十年中，男婴和女婴的比率有所降低。
