Bioequivalence and Bioavailability Forum • loosing specificity due to low sensitivity

loosing specificity due to low sensitivity [Regulatives / Guidelines]

posted by mittyri – Russia, 2017-05-09 01:28 (2536 d 23:52 ago) – Posting: # 17327
Views: 29,473

Hi Helmut,

you've made a great work! Won't it be published?
In your examples (simulations/practice) you showed the TxG test is not a good idea.
I was impressed by this:

❝ Model 1: p(G×T) <0.1 in 17.91% of studies.

❝ b. T/R in both groups 1.00

❝ (i.e., no Group-by-Treatment interaction):

❝ Model 1: p(G×T) <0.1 in 9.79% of studies.

❝ If you prefer more extreme stuff: T/R in group 1 0.90, T/R in group 2 0.90^–1

❝ Model 1: p(G×T) <0.1 in 40.35% of studies.

I see that the sensitivity is really low, but I think it is not a good idea to compensate it with low specificity (high false positive).

Once again, thank you very much! Wouldn't you mind to publish the code of data building for simulations?

—
Kind regards,
Mittyri

Complete thread:

Russian «Экспертами» and their hobby Helmut 2017-04-29 00:46 [Regulatives / Guidelines]
- Low power of Group-by-Treatment interaction mittyri 2017-04-29 22:57
  - Let’s forget the Group-by-Treatment interaction, please! Helmut 2017-04-30 13:54
    - Let’s forget the Group-by-Treatment interaction, please! ElMaestro 2017-05-01 16:19
      - Some answers Helmut 2017-05-02 01:10
        
        Some answers ElMaestro 2017-05-02 09:04
        
        Example Helmut 2017-05-02 12:35
        
        Sensitivity of term? mittyri 2017-05-02 18:29
        
        Simulations Helmut 2017-05-05 14:38
        
        loosing specificity due to low sensitivitymittyri 2017-05-08 23:28
        
        loosing specificity due to low sensitivity Helmut 2017-05-09 00:55
        
        Loss in power Helmut 2017-05-06 17:31
        Interval between groups Helmut 2017-05-08 19:02
        
        IMP handling mittyri 2017-05-08 23:40
        
        IMP handling Helmut 2017-05-09 01:08
        
        Loss in power Helmut 2017-05-14 17:22
      - No convergence in JMP and Phoenix WinNonlin Helmut 2017-05-25 15:26
        
        Ouch?!??? ElMaestro 2017-05-25 16:24
- Russian «Экспертами» and their hobby Artem Gusev 2017-05-02 16:13
  - be careful with mixed models mittyri 2017-05-02 17:53
    - be careful with mixed models Artem Gusev 2017-05-03 11:02
  - p-value(s) in model 2 Helmut 2017-05-05 14:48
- Russian «Экспертами» following the EEU GLs Helmut 2017-05-24 20:17
  - Russian «Экспертами» following the EEU GLs Beholder 2017-05-24 22:37
    - Penalty for carelessness mittyri 2017-05-25 08:52
    - Russian «Экспертами» following the EEU GLs Beholder 2017-05-25 10:43
  - Russian «Экспертами» following the EEU GLs Mikalai 2018-01-04 10:43
    - Belarus = member of the EEU Helmut 2018-01-04 13:08
      - Belarus = member of the EEU Mikalai 2018-01-04 19:49
      - Trying your model for EEU mittyri 2018-01-04 22:04
        
        Trying your model for EEU Helmut 2018-01-05 00:06
        
        help us to stop it, please... Astea 2018-01-10 12:09
        
        help us to stop it, please... Beholder 2018-01-10 12:49
        regulators convinced by science? d_labes 2018-01-10 15:15
        
        regulators convinced by science? Beholder 2018-01-10 17:14
        
        Чёрт побери! d_labes 2018-01-10 18:53
        
        regulators convinced by science? Astea 2018-01-10 19:10
        
        Excuse me d_labes 2018-01-10 20:18
        
        Excuse me Astea 2018-01-10 20:38