Study Design. Prospective, observational study.

研究设计：前瞻性观察研究。

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Based on this observational study alone, the risk cannot be associated with certainty to the growth hormone treatment.

单独基于这个观察研究，不能确定这个风险与使用促生长激素治疗有关。

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We analyzed data from the Program to Improve Care in Acute Renal Disease (PICARD), a multi-center observational study of ARF.

我们分析了来自改善急性肾脏疾病照护计划(PICARD)——一个ARF多中心观察研究的数据。

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Last week, the Lancet published the combined results of a larger observational study, also led by Professor Rothwell.

VOA: special.2010.12.14

It was an observational study.

VOA: special.2009.09.01

No previous long-term observational study had collected both environmental and biomedical information starting in utero.

FORBES: What Caused A Billion Dollar Federal Study Of Child Health To Implode?

One observational study compared Jewish children in the United Kingdom with those in Israel, where the peanut-allergy rate is low.

WSJ: Food Allergy Advice for Parents: Start Peanuts, Eggs and More Sooner

PatientsLikeMe offered instead to run a more rigorous observational study with members of the network to increase chances of getting a valid result.

WSJ: ALS Study Falls Short, But Use of Social Media Holds Promise