For example, a UK study by Dixon et al. 9 compared the risk of tuberculosis ... K., Solomon, D. & Kim, S. Active-comparator design and new-user design in observational studies ...

Why register observational studies? Much of the rationale for the prospective registration of clinical trials 9 applies to the registration of observational studies (). 7 For example, observational ...

Why with observation alone there is no random assignment of exposure, so confounding by other factors should always be considered as an explanation for associations found in an observational study.

Familiarity with notions of research design in the social sciences, to the level ... difference-in-difference, and regression discontinuity. Examples are drawn from different social sciences. The ...

Although we must recognize that observational studies are also prone to limitations associated with misclassification, under-reporting, or ascertainment, criteria have been established to design and ...

SPADE: Design of a real-world observational study of avelumab first-line (1L) maintenance in advanced urothelial carcinoma (UC) in the Asia-Pacific (APAC) region. Authors: Po-Jung Su, Se Hoon Park, Yu ...

Why with observation alone there is no random assignment of exposure, so confounding by other factors should always be considered as an explanation for associations found in an observational study.

Familiarity with notions of research design in the social sciences, to the level ... difference-in-difference, and regression discontinuity. Examples are drawn from different social sciences. The ...