American College of Rheumatology Criteria

In clinical trials for rheumatoid arthritis, standard criteria to compare the effectiveness of various arthritis medications or arthritis treatments, or to compare one trial to another trial has become widely used. The criteria, known as ACR Criteria or American College of Rheumatology Criteria, is referred to in nearly all published studies assessing efficacy. Clinical trial outcomes are described as a percentage of study participants achieving ACR 20, ACR 50, and ACR 70.

• What is ACR criteria and what does it indicate?
• What is ACR 20, ACR 50, ACR 70?
• What does the terminology refer to in clinical trials?

Learn more about the American College of Rheumatology Criteria.

Related Resources:

• Arthritis Research
• Judging Clinical Trials
• Clinical Trials for Arthritis
• Clinical Trials: Why Volunteer?

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