Bioequivalence and Bioavailability Forum

R in Stability [General Statistics]

posted by yjlee168 – Kaohsiung, Taiwan, 2013-11-25 08:34 (4594 d 11:47 ago) – Posting: # 11959
Views: 8,449

Dear Anu,

❝ [...] As in the link, The initial values for the Batches was from ( 0-36 months).

❝ Extrapolated the values to( 0-85 months).

I see. It's just a "predicted" shelf-life obtained from stab for R, even though you have the initial data for only 0-36 months. Finally, you will still need the "real" lab data to confirm the "predicted" shelf-life as claimed (such as shelf-life = 60 months) officially. That's what stab for R is designed for. It provides the information of "predicted" shelf-life to allow the manufacturer to decide how long the long-term stability should be conducted.

❝ ❝ What 'extrapolated values' did you calculate?

❝

❝ Was not able to code in R,to find the lower and upper confidence bound, and the graph as given in the link.

You confused me again. Yes, it is able to code in R and should be very easy to understand the whole scheme.

—
All the best,
-- Yung-jin Lee
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Complete thread:

R in Stability Anu 2013-11-25 06:06
- R in Stability yjlee168 2013-11-25 06:45
  - R in Stability Anu 2013-11-25 07:22
    - R in Stabilityyjlee168 2013-11-25 07:34
    - R in Stability jag009 2013-11-25 17:34
      - R in Stability yjlee168 2013-11-25 18:06
        
        R in Stability jag009 2013-11-25 20:21
        
        R in Stability yjlee168 2013-11-26 11:03
      - R in Stability Anu 2013-11-29 07:18
        
        R in Stability yjlee168 2013-11-29 07:29

R in Stability [General Sta­tis­tics]

Complete thread:

R in Stability [General Statistics]