What do cr and or mean in clinical trials?

The differences between cr and or in clinical trials are as follows.

1. Clinical trial CR is a common radiological examination method, also known as digital radiography.

2. Clinical trials, or odds ratio and odds ratio, mainly refer to the ratio of the exposed and unexposed in the case group divided by the ratio of the exposed and unexposed in the control group. It is a commonly used index in case-control study in epidemiological research.