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

上周，Lancet发表了也是由Rothwell教授负责的一个更大的观察研究的联合结果。

Researchers cautioned that this was an observational study that does not necessarily carry the same scientific weight as a blinded clinical trial.

研究者警示，这种观察研究与临床试验未必有同样的科学意义。

The observational study revealed new insights into human psychology.

这项观察的研究揭示了人类心理学的新见解。

We don't really know from this observational study whether kids are substituting unhealthful foods for the more healthful ones.

Gillman说，“在这项观察性研究中，我们真的不知道孩子们是否在用健康食品代替不健康食品。

In a large-scale observational study, Park decided to map out Santa visits to the UK in 2015, focusing on the children who needed holiday cheer the most: kids in hospitals.

在一项大规模的观察性研究中，Park决定记录圣诞老人于2015在英国的探访足迹，重点放在最需要节日祝福的孩子们身上：医院里的孩子们。

In a small observational study, CRT conferred significant clinical and ventricular reverse-remodeling benefits regardless of QRS duration among patients with TDI-confirmed dyssynchrony.

一项小型观察性研究中，对TDI证实为心室运动失同步的患者行CRT，不论其QRS宽度如何，患者在临床症状和逆转心室重构方面均有显著好转。

The move follows findings from a large observational study, published Friday, that found increased risk of heart problems and death in COVID-19 patients who used chloroquine and hydroxychloroquine.

此前，在周五发表的一项大型观察性研究中发现，使用氯喹和羟氯喹的新冠病人患心脏病和死亡的风险会增加，因此做出这一决定。