All posts tagged: Orencia infusion

What does ACR20 mean

    Have you ever thought about what the numbers mean when they say 50% ACR20 at 6 months? This simply says 50% of the group had a 20% response at 6 months. It means half improved by 20%.   The ACR improvement criteria includes ACR20, ACR50 and ACR70. Meaning, 20%, 50% and 70% improvement. Easily enough to understand. I was reviewing a research paper on Orencia. I will be having my 8th infusion on Thursday. I was wondering if it was being effective enough and if I should keep taking it. The article had a chart for clinical responses in controlled trials. I reviewed the column that said inadequate response to methotrexate (The reason for being on Orencia; I think my methotrexate response is 50%, but it is not enough for me.) A response of ACR20 3  months 62% 6  months 68% 12 months 73%   This means that at 3 months 62% of the patients had a 20% improvement This means that at 6 months 68% of the patients had a 20% improvement. …