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Should protocols for observational research be registered?

观察研究的协议是否应该注册？

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He points to previous observational research suggesting that people who skip breakfast in favor of massive meals in the evening hours tend to be overweight.

他提到了此前的观测法研究，该研究认为不吃早饭的人更喜欢在晚上饱餐一顿，也更容易体重超标。

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She explained that GE regularly conducts discovery sessions with customers, maps the customer journey (all actions taken by the customer in the product or service area), and conducts observational research.

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Because these studies are mainly observational, extensive research is under way to determine the causal relationship between vitamin D levels and disease as well as the role of increasing vitamin D intake.

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Gray runs Tropical Meteorology Project at Colorado State and has worked in the observational and theoretical aspects of tropical meteorological research for more than 40 years.

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